【轉載】畫質PK Realtek 1073 挑戰 Sigma 8635測試

土匪 · 發表於 2009-11-27 14:05:54

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最近硬碟式多媒體播放機如雨後春筍般的出現在市面上，最早是由SigmaDesign的SMP863X晶片作為核心，接著Realtek RTD1073也隨後趕上，到底以這兩款晶片為核心的播放器其功能及音、畫質表現如何呢？
思路的lsjun網友發表了非常精采的一個測試報告，我們特別徵求作者的同意轉為繁體中文，轉載於HD.club，希望提供給大家一個較為客觀的討論空間！ 
 
原始討論串︰ <A href="http://www.mysilu.com/viewthread.php?tid=414695" target=_blank>《画质PK Realtek 1073 挑战 Sigma 8635测试第二场增加HD HQV Benchmark测试报告...》</A>

土匪 · 發表於 2009-11-27 14:08:19

以下為思路的lsjun網友發表的原始文章，特別徵求作者的同意轉為繁體中文張貼 
 
 
畫質對比，歷來是引爆各大論壇口水大戰的導火線，原因很多。拍攝相機、鏡頭素質、白平衡校調、曝光量、後期是否優化、畫面縮小損失等等太多因素會影響最終成像畫質了，最後大家的顯示器各不相同，畫質表現更是千差萬別。
作為思路老會員，現又是商家身份本不該在此引信，但近來兩大方案的評論層出不窮，廣大會員一頭霧水。
本人歷經Sigma方案高清機幾代更新，對新出的Realtek方案畫質表現如何，跟Sigma方案的差距有多少，差距值不值那些RMB也很想一試究竟。
於是乎，憑著玩上高清以來的熱心,正好手裡兩個方案的高清機齊全，遂拍出糖水片無數，發出來大家對比一下。在此冒著被罵js+槍手的風險還要發貼目的只有一個，在相同的環境下用同一個相機、同一個角度、曝光量、快門...忠實記錄兩款熱門產品的真實表現，給廣大網友一個對比參考。
 
我的相機、拍攝水平、顯示設備都是入門級，所出畫面比機器實際顯示效果還有很大差距，評測出圖僅作對比參考，不代表產品的真正表現。
有條件的朋友應現場察看產品實際表現。
 (以上為lsjun個人發表,僅供參考,理性評價,請勿攻擊!)

土匪 · 發表於 2009-11-27 14:35:56

拍攝器材： 說起畫質表現，150寸大幕布、1080p高清投影、56寸全高清平板電視、大馬三、L級大光圈...好多雷人裝備.口水流了一地..不過等俺賺到這些裝備，評測還得何年何月.還是趕緊轉回主題，咱要的是對比效果，不是表現畫質.還是抱出咱窮人的裝備吧. 相機：Canon EOS 450D 鏡頭: 450D Sigma 17-70 DC Micro 曼富圖腳架+板磚6p（注：準備磚頭可不是讓大家來拍我的哦,三個支架碼上磚頭以防淘氣小咪出來鍛煉爬樹...) EOS Utility USB接電腦遙控拍攝，快門線轉移快門一米開外，低速快門機身不抖，中間累了也可以坐著拍會 顯示器：Benq 24寸液晶帶HDMI接口（畫質不好？咱前面說了，只為了對比) Sigma 8635高清機一台 Realtek 1073高清機一台 HDMI線材一根、電源線無數.. 
 
準備花絮.. 篩選測試樣片...嗯，性感美女.火爆電影.數不勝數啊，逐個翻出硬盤，再找相同場景、再步進切出同一幀.很不錯，不過評測完估計到明年中秋了.還是祭出葵花寶典<SUPER CAST HIVI>Blu Ray吧. 使用TMT3播放，根據導航菜單找出對應的m2ts文件N個。 黑燈瞎火開始校顯示器亮度..我的Benq自帶DVI、HDMI、VGA三個接口，並且3個接口下參數調整是統一的。因此在DVI電腦顯示下調好亮度、對比度，HDMI下也完全一樣。還是用SUPER HIVI CAST，用下面的灰度卡作參照，很快調出顯示器最佳亮度50，對比度42，色彩模式統一為SRGB,保證色溫都為6500K。
 
<A href="http://www.mysilu.com/attachments/day_090906/090906204279f396828477992f.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906204279f396828477992f.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906204279f396828477992f.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/09090620425b079afd7bbc4968.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090620425b079afd7bbc4968.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090620425b079afd7bbc4968.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
調完顯示器就該調相機了。以HDTV BT.709標準彩條信號來檢查相機白平衡。同時因使用PC顯示器,對兩款播放機的PC Level和TV Level轉換是否處理得當也是個檢驗. 用TMT3截屏原圖: (TMT默認採用Overlay渲染模式,YC轉換後各色條讀數分別為:白(191,191,191)黃(191,191,0)青(1,191,191)綠(0,191,0)品紅(191,0,192)紅(190,0,0)藍(0,1,190)
 
<A href="http://www.mysilu.com/attachments/day_090907/090907162483a6da417773698b.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/090907162483a6da417773698b.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/090907162483a6da417773698b.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
DTV BT.709 標準彩條信號檢驗相機白平衡還原是否準確。因顯示器各區域亮度不是絕對均勻,再加上鏡頭還有暗角.要達到標準的彩條效果太難太難..在多次嘗試後,以接近白色191,191,191為準. 既然拍攝條件有限,不能完全還原標準彩條的數值,那就以電腦顯示拍攝的畫面的白平衡作標準。
 
<A href="http://www.mysilu.com/attachments/day_090906/090906213244d715b0b41d8669.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906213244d715b0b41d8669.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906213244d715b0b41d8669.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/090906213244d715b0b41d8669.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906213244d715b0b41d8669.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906213244d715b0b41d8669.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
再用相機拍攝這張TMT3(Overlay)播放的H從拍攝出圖的讀數看,Realtek 1073的圖片因對比度、亮度控制得當，色域輸出採用了與Overlay相同的類型,因此白色彩條與電腦播放讀數非常接近，但紅色、藍色等一定差距，從後面拍攝模特膚色等出圖來看，Realtek的色溫（調）偏暖。比較討好大家眼球。
<A href="http://www.mysilu.com/attachments/day_090906/0909062125228785b91313547a.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909062125228785b91313547a.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909062125228785b91313547a.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
 
而Sigma 8635高清機色域輸出與電腦VMR輸出相當.附上KMP VMR渲染模式下播放畫面截圖:
<A href="http://www.mysilu.com/attachments/day_090907/09090716249423623f1ac7586c.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/09090716249423623f1ac7586c.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/09090716249423623f1ac7586c.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
各色條讀數分別為:白(180,180,180)黃(179,191,19)青(27,198,179)綠(26,210,18)品紅(170,0,178)紅(169,0,17)藍(17,5,177)，與HDTV BT.709原始標準圖相差甚微。
 
<A href="http://www.mysilu.com/attachments/day_090906/0909062125447e30504460a585.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909062125447e30504460a585.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909062125447e30504460a585.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
從拍攝出圖讀數上看,Sigma的默認輸出亮度偏低，整體與標準圖差12%左右.
下面的亮度調整時也能看到這個問題.默認亮度調高10%則接近標準讀數。
再打開我的高清EXCEL節目表全屏顯示作參考，尋找鏡頭最佳光圈、最佳銳度。
贊一下相機的視力，1米開外，1920X1200P分辯率下表格中的小字我這2.0的視力都基本全虛了，但相機還能忠實還原，最終清晰度以能看清表格中最小文字，並不出現摩爾紋為準。
 
<A href="http://www.mysilu.com/attachments/day_090906/0909062142f28d20ddcaeec0a8.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909062142f28d20ddcaeec0a8.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909062142f28d20ddcaeec0a8.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
中間省略手動調焦、跟討厭的摩爾紋做鬥爭N次...廢片100多張..2個小時很快過去了．
10：30半了，旁邊小咪都折騰完開始睡覺了..O~啦 
一時高興,拍腿而起,驚起小咪白眼無數又繼續昏昏睡去...
總算在清晰度和摩爾紋之間手動調出了折衷的焦距..快11點了，趕緊開始拍吧.. 很快接上本次的主角，有了前面HTPC顯示調校的基礎，後面2台高清機的畫面輸出調校就容易多了。
不過我並沒有調整輸出參數，原因很簡單，兩個方案機器畫面輸出定義各不相同，而且調出不同的對比度、亮度也不好做對比。再次浪費近1小時，最後決定直接用默認設置吧，相信絕大多數用戶也不會去專門調整。 
既然都按默認輸出，高清機輸出上也沒什麼可調了，都按1080P 60HZ輸出，時間也不早了，還是趕緊開工吧. 
 
 
圖片後期處理說明: 
本次拍攝圖片,全部使用統一的曝光量、快門速度、銳度、對比度、亮度，後期經過PS統一裁剪為800X541大小，為了方便大家對比查看，添加了高清機方案文字說明。
統一的動作，批量處理，全程未做特殊優化，更未針對某一方案進行優化，大家可以查看圖片參數，下面也有PS處理動作過程。論壇默認顯示的是小圖片，鼠標雙擊可以查看高清大圖。
 
<A href="http://www.mysilu.com/attachments/day_090906/090906220148e2417b77ef3336.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906220148e2417b77ef3336.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906220148e2417b77ef3336.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/0909062201ecc74ac1b0e78023.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909062201ecc74ac1b0e78023.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909062201ecc74ac1b0e78023.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
<A href="http://www.mysilu.com/attachments/day_090902/09090214441573d80f8c0447fa.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090902/09090214441573d80f8c0447fa.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090902/09090214441573d80f8c0447fa.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>

土匪 · 發表於 2009-11-27 14:56:42

亮度及對比度 
Realtek高清機交給用戶調整的參數不多,只有亮度和對比度.默認情況下是亮度25、對比度25。 
<A href="http://www.mysilu.com/attachments/day_090907/0909071720f0b3488f3be55d06.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/0909071720f0b3488f3be55d06.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/0909071720f0b3488f3be55d06.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090907/090907172077054266ea66c5ab.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/090907172077054266ea66c5ab.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/090907172077054266ea66c5ab.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
Sigma方案高清機的輸出默認是亮度、對比度、色度、銳度都是50。 
<A href="http://www.mysilu.com/attachments/day_090907/0909071720adf91366fcf5ecfc.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/0909071720adf91366fcf5ecfc.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/0909071720adf91366fcf5ecfc.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090907/090907172007fc35e95eb34cb7.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/090907172007fc35e95eb34cb7.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/090907172007fc35e95eb34cb7.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
1073的默認輸出亮度控制得相當到位，顯示器上能清晰看到1%的亮度差別，稍稍調低或者調高亮度，１％的亮度區別就看不到了。 
<A href="http://www.mysilu.com/attachments/day_090907/0909071720468aa7bc921c6380.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/0909071720468aa7bc921c6380.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/0909071720468aa7bc921c6380.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
Sigma方案高清機,能看到107%的super White部分，不知是否與採用Sii 9134 HDMI傳輸芯片支持x.v.color廣色域空間和Super White有關. 
<A href="http://www.mysilu.com/attachments/day_090907/0909071720b3ef98379ff01c02.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/0909071720b3ef98379ff01c02.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/0909071720b3ef98379ff01c02.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
但黑電平測試１０７３的默認輸出就不行了，１０％以下一團漆黑，個人認為是Realtek的色域空間應該採取TV Level 16-235，而在接顯示器時採取了類似OVERLAY的處理辦法,測試視頻中16%以下灰度直接被扔掉.在後面的拍攝出圖中也能看到，丟失了不少暗部細節。好處是與源信號保持了一致性,TV Level對Tv Level 因此大家會覺得顏色更鮮艷自然. 
<A href="http://www.mysilu.com/attachments/day_090907/09090717202e38739cedb0a292.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/09090717202e38739cedb0a292.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/09090717202e38739cedb0a292.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
Sigma高清機灰階測試圖，拍攝現場能看到1%的黑位區分，同樣能看到低於0%的Super White。 
<A href="http://www.mysilu.com/attachments/day_090907/09090717203945393421e52ad0.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/09090717203945393421e52ad0.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/09090717203945393421e52ad0.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
從灰階圖拍攝表現更能看出兩者的區別。
<A href="http://www.mysilu.com/attachments/day_090907/0909071720de0cce5df006516b.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/0909071720de0cce5df006516b.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/0909071720de0cce5df006516b.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
Sigma高清機的灰階圖顯示很到位，拍攝現場1%-16%灰階都能清晰可見，從後面的拍攝出圖也能看到，暗部細節表現要好得多。從灰階圖表現看來,Sigma採取了類似電腦VMR的處理方式,0-16和235-255灰階都得以保留,但以PC Level顯示TV Level的信號,白色顯示亮灰色,黑色顯示暗灰色,給大家看到的感覺是暗淡、發白的畫面。
<A href="http://www.mysilu.com/attachments/day_090907/0909071720163d7b1a5fa73ee2.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/0909071720163d7b1a5fa73ee2.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/0909071720163d7b1a5fa73ee2.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
相比之下,默認輸出的Sigma高清機跟Realtek相比用全域RGB色彩顯示，直接出圖在色彩表面方面比較吃虧。而Realtek的高清機，雖然保持了色彩空間的一致性，但接顯示器顯示色彩空間轉換時丟了不少灰階，損失了不少暗部細節。這裡看到Realtek沒有開放色彩空間調整，HDMI或者VGA接電腦顯示器時兼容性就不如Sigma了。而Sigma 8635的色彩空間調整是開放的，有RGB 即PC Level(0-255)和YCBCR 即TV Level(16-235)兩種模式可選，不論是接電視機、投影，還是轉接電腦顯示器，都可以通過合理的設置來實現最佳效果，對於大多數玩家來說，有選項可調，不愁調不出好效果來。當然，Realtek的高清機連接電視機、投影時，直接是TV LEVEL對TV Level，經測試不會因為色彩空間轉換而丟失灰階。但從這次測試中可以看出，正確的色彩空間（RGB MODE）對於正常還原色彩是多麼的重要，在此也希望各高清機廠家能開放這一重要的設置選項，以避免灰階損失對畫質的影響。

土匪 · 發表於 2009-11-27 15:02:34

色調表現 
1073方案的默認輸出色溫偏暖，出來的片片比較討好眼球。而Sigma方案的默認輸出亮度偏低10%，色溫有點偏冷 
<A href="http://www.mysilu.com/attachments/day_090906/09090619078adf2e5bf6c82a6e.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090619078adf2e5bf6c82a6e.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090619078adf2e5bf6c82a6e.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/09090619079c488e8b8f534749.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090619079c488e8b8f534749.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090619079c488e8b8f534749.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
<A href="http://www.mysilu.com/attachments/day_090906/090906190773503f3b8ce2b906.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906190773503f3b8ce2b906.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906190773503f3b8ce2b906.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/0909061907c9e596710e11cc88.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909061907c9e596710e11cc88.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909061907c9e596710e11cc88.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
<A href="http://www.mysilu.com/attachments/day_090906/0909061907652259546cdf5c65.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909061907652259546cdf5c65.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909061907652259546cdf5c65.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/090906190776e895cc3dcc4b51.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906190776e895cc3dcc4b51.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906190776e895cc3dcc4b51.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
<A href="http://www.mysilu.com/attachments/day_090906/09090619072efc625d0cbf98e8.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090619072efc625d0cbf98e8.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090619072efc625d0cbf98e8.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/0909061907fe1676c8b76c6b5c.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909061907fe1676c8b76c6b5c.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909061907fe1676c8b76c6b5c.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>

土匪 · 發表於 2009-11-27 15:07:34

色彩還原表現 
<A href="http://www.mysilu.com/attachments/day_090906/09090621481837c9bd26769534.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090621481837c9bd26769534.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090621481837c9bd26769534.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
<A href="http://www.mysilu.com/attachments/day_090906/090906214898fc9acf2eafac96.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906214898fc9acf2eafac96.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906214898fc9acf2eafac96.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/09090621487caeb0b76d7fd78a.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090621487caeb0b76d7fd78a.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090621487caeb0b76d7fd78a.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
<A href="http://www.mysilu.com/attachments/day_090906/09090619045b8eaf2a6b456440.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090619045b8eaf2a6b456440.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090619045b8eaf2a6b456440.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/09090619044e6de6fbd2968e18.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090619044e6de6fbd2968e18.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090619044e6de6fbd2968e18.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
<A href="http://www.mysilu.com/attachments/day_090906/09090619041f6177aa4b159d8a.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090619041f6177aa4b159d8a.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090619041f6177aa4b159d8a.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/090906190495eca9ad7b6e2bbc.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906190495eca9ad7b6e2bbc.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906190495eca9ad7b6e2bbc.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
<A href="http://www.mysilu.com/attachments/day_090906/09090619042d83442cf6c50a30.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090619042d83442cf6c50a30.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090619042d83442cf6c50a30.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/090906190412325e88743be268.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906190412325e88743be268.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906190412325e88743be268.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>

土匪 · 發表於 2009-11-27 15:16:01

銳度及清晰度對比 
因論壇只顯示小圖，加上raw轉jpeg，再裁剪縮放，細節損失不小，建議大家點擊查看原圖對比。
 
<A href="http://www.mysilu.com/attachments/day_090907/0909071728b14ccb8c5e001a54.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/0909071728b14ccb8c5e001a54.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/0909071728b14ccb8c5e001a54.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090907/09090717289ee5d56d990f8718.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/09090717289ee5d56d990f8718.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/09090717289ee5d56d990f8718.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
1073原始拍攝Raw 100%大小局部截圖 
<A href="http://www.mysilu.com/attachments/day_090907/09090717288515a0d0c3731555.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/09090717288515a0d0c3731555.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/09090717288515a0d0c3731555.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
8635原始拍攝Raw 100%大小局部截圖 
<A href="http://www.mysilu.com/attachments/day_090907/09090717281b791095f33312e0.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/09090717281b791095f33312e0.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/09090717281b791095f33312e0.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
<A href="http://www.mysilu.com/attachments/day_090907/09090717288f6914ef427bf122.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/09090717288f6914ef427bf122.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/09090717288f6914ef427bf122.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090907/090907172882a71672c1e46b1e.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/090907172882a71672c1e46b1e.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/090907172882a71672c1e46b1e.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
<A href="http://www.mysilu.com/attachments/day_090907/09090717287f27166f38fe5169.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/09090717287f27166f38fe5169.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/09090717287f27166f38fe5169.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090907/09090717286cfe021346e7d9fe.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/09090717286cfe021346e7d9fe.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/09090717286cfe021346e7d9fe.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
1073原始拍攝Raw 100%大小局部截圖 
<A href="http://www.mysilu.com/attachments/day_090907/0909071728bb3b8402b17826ae.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/0909071728bb3b8402b17826ae.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/0909071728bb3b8402b17826ae.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
8635原始拍攝Raw 100%大小局部截圖 
<A href="http://www.mysilu.com/attachments/day_090907/0909071728d9a80943e41ce38e.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090907/0909071728d9a80943e41ce38e.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090907/0909071728d9a80943e41ce38e.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
從拍攝現場觀察和100％截圖對比，Sigma高清機在線條和字體邊緣的處理上略勝一籌，更平滑銳利一些。

土匪 · 發表於 2009-11-27 15:21:22

黑位及暗部細節 
 
<A href="http://www.mysilu.com/attachments/day_090906/09090618461acf35def505a597.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090618461acf35def505a597.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090618461acf35def505a597.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/09090618463948a0cc67cad90a.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090618463948a0cc67cad90a.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090618463948a0cc67cad90a.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
<A href="http://www.mysilu.com/attachments/day_090906/090906184600d0c78f3fd21e97.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906184600d0c78f3fd21e97.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906184600d0c78f3fd21e97.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/0909061846c7da4d569e466467.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909061846c7da4d569e466467.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909061846c7da4d569e466467.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
Sigma高清機在這一環節藉助良好的灰階控制，暗部細節表達到位。  
 
<A href="http://www.mysilu.com/attachments/day_090906/090906184610df7cc928d66d02.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906184610df7cc928d66d02.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906184610df7cc928d66d02.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/090906184682b2df86e4305bdd.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906184682b2df86e4305bdd.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906184682b2df86e4305bdd.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
<A href="http://www.mysilu.com/attachments/day_090906/09090618468fbaee3d72dbbb7f.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090618468fbaee3d72dbbb7f.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090618468fbaee3d72dbbb7f.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/09090618466d428d3cdb04d381.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090618466d428d3cdb04d381.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090618466d428d3cdb04d381.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>

土匪 · 發表於 2009-11-27 15:32:43

第一階段的對比,大多是靜態畫面的比較,主要能看出色溫(調)、灰階、亮度、對比度等方面的差別。而兩款播放機的默認輸出幾項參數又不相同，因此不好說誰家畫質表現更好一些。接下來使用HD HQV Benchmark可以對兩款播放機的視頻回放處理進行進一步的對比測試。 
（注：HD HQV Benchmark的使用部分轉自HDDVD.net，感謝原作者的教程） 
HD noiSe reDUCTion（HD視頻噪點處理測試） 這個項目通過兩張視頻圖像變換非常緩慢的演示片段，考察顯示系統能否處理得到乾淨、清晰的圖像效果。
 
<A href="http://www.mysilu.com/attachments/day_090906/090906192847c18b9bda48ef51.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906192847c18b9bda48ef51.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906192847c18b9bda48ef51.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
HD noiSe reDUCTion 
<TABLE class=t_table align=center>
<TBODY>
<TR>
<TD width=399 colSpan=2>
HD noiSe reduction 評分標準</TD></TR>
<TR>
<TD width=87>
25</TD>
<TD width=312>噪點明顯降低 而不喪失細節</TD></TR>
<TR>
<TD width=87>
15</TD>
<TD width=312>噪點降低 部分細節得到保留</TD></TR>
<TR>
<TD width=87>
7</TD>
<TD width=312>噪點降低 但細節丟失</TD></TR>
<TR>
<TD width=87>
0</TD>
<TD width=312>無明顯減少噪點或者圖像細節丟失</TD></TR></TBODY></TABLE>
 
 
即便是高清視頻也不可避免的存在噪點問題。在視頻拍攝的過程中，電子設備的干擾、CCD感光元件不可避免的成像缺陷會造成視頻源的噪點（特別是在一些黑暗的場景）。而在後期圖像處理時，視頻捕捉、複製、編輯、色彩校正等操作時噪點會不經意的增加，在大範圍單色區域中噪點尤其明顯。所有的視頻都存在噪點，無論720P、1080i還是1080P，很多人可能並不會特別在意噪點的存在，但一些經過重新壓製的視頻噪點可能會比較多，如何在視頻播放時有效的消除噪點成為一項新的挑戰。 
 
<A href="http://www.mysilu.com/attachments/day_090906/09090619192c8239c7d9d814ea.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090619192c8239c7d9d814ea.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090619192c8239c7d9d814ea.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/09090619199b63a55271b5174d.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090619199b63a55271b5174d.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090619199b63a55271b5174d.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
<A href="http://www.mysilu.com/attachments/day_090906/090906191985ff169d46da2ded.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906191985ff169d46da2ded.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906191985ff169d46da2ded.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/09090619197b02f176f45d84ea.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090619197b02f176f45d84ea.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090619197b02f176f45d84ea.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
<A href="http://www.mysilu.com/attachments/day_090906/0909061919e36bd26a34a84342.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909061919e36bd26a34a84342.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909061919e36bd26a34a84342.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/09090619191251faeaaf0f8052.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090619191251faeaaf0f8052.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090619191251faeaaf0f8052.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
這個環節個人認為Sigma 8635細節表現更到位，要是打分的話，我覺得Realtek 1073 5分 Sigma 8635 10分。 
 
1073-噪點處理原始拍攝RAW 100%大小截圖 
<A href="http://www.mysilu.com/attachments/day_090906/0909062033ca53fd0029633b37.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909062033ca53fd0029633b37.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909062033ca53fd0029633b37.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
8635-噪點處理原始拍攝RAW 100%大小截圖
<A href="http://www.mysilu.com/attachments/day_090906/0909062033871c991bf98e9d55.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909062033871c991bf98e9d55.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909062033871c991bf98e9d55.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>

土匪 · 發表於 2009-11-27 15:52:39

HD VIDEO RESOLUTION LOSS TEST（HD視頻分辨率損失測試） 
<A href="http://www.mysilu.com/attachments/day_090906/09090619315bca8f378abf6a09.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090619315bca8f378abf6a09.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090619315bca8f378abf6a09.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
<TABLE class=t_table align=center>
<TBODY>
<TR>
<TD width=399 colSpan=2>
HD VIDEO RESOLUTION LOSS TEST 評分標準</TD></TR>
<TR>
<TD width=87>
20</TD>
<TD width=312>能夠清晰看到四個角落的橫向黑白色線條</TD></TR>
<TR>
<TD width=87>
0</TD>
<TD width=312>視頻損失 顯示黑白方塊</TD></TR></TBODY></TABLE>
 
早期的隔行視頻是由奇數偶數場複合而成的，這樣做的好處就是視頻的體積和碼率可以減少一半。但這也給視頻處理器留下了一些問題，想要讓奇數偶數場完美的合成為一幀圖像並沒有那麼容易。簡單來講，如果視頻是靜態物體，那麼奇數偶數幀可以構成完整分辨率的圖像，分辨率並沒有損失；如果視頻是運動物體，那麼兩幀合成的圖像會不一致，視頻分辨率有所損失。好的視頻處理器會自動識別運動物體和禁止物體，這樣就能保證所有情況下的清晰度，並且對運動圖像做出補償。但這樣也可能會出現一些新的問題，如果視頻處理器將禁止物體誤判為運動物體，那麼一半有效的圖像就會被拋棄，如果將運動物體認為是靜止物體，那麼就會出現鋸齒狀錯行現象。
 
 <A href="http://www.mysilu.com/attachments/day_090906/0909061931d5ff943e1e4e5bbb.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909061931d5ff943e1e4e5bbb.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909061931d5ff943e1e4e5bbb.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/090906193191530e7ceaf39772.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906193191530e7ceaf39772.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906193191530e7ceaf39772.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
通過對比觀察，Sigma 8635處理似乎更好一些，大家請看兩幅圖四個邊角的方塊，Sigma小方塊裡的橫線要細密一些。 
 
 
1073-影片分辨率損失測試原始拍攝Raw100%大小局部截圖
<A href="http://www.mysilu.com/attachments/day_090906/090906225588f9b23937f03925.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906225588f9b23937f03925.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906225588f9b23937f03925.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
8635-影片分辨率損失測試原始拍攝Raw100%大小局部截圖
 <A href="http://www.mysilu.com/attachments/day_090906/0909062255a3937e3a5607e015.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909062255a3937e3a5607e015.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909062255a3937e3a5607e015.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
FILM RESOLUTION LOSS TEST（影片分辨率損失測試）
 <A href="http://www.mysilu.com/attachments/day_090906/090906194021b52df536809330.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906194021b52df536809330.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906194021b52df536809330.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
<TABLE class=t_table align=center>
<TBODY>
<TR>
<TD width=399 colSpan=2>FILM RESOLUTION LOSS TEST 評分標準</TD></TR>
<TR>
<TD width=87>
20</TD>
<TD width=312>能夠清晰看到四個角落的橫向黑白色線條</TD></TR>
<TR>
<TD width=87>
0</TD>
<TD width=312>視頻損失</TD></TR></TBODY></TABLE>
 
 
<A href="http://www.mysilu.com/attachments/day_090906/0909061940827da99958440c87.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909061940827da99958440c87.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909061940827da99958440c87.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/090906194036c0f49fdd8d8ee1.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906194036c0f49fdd8d8ee1.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906194036c0f49fdd8d8ee1.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
 <A href="http://www.mysilu.com/attachments/day_090906/0909061940bfb8bb307ed52926.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909061940bfb8bb307ed52926.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909061940bfb8bb307ed52926.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
FILM RESOLUTION LOSS TEST-STADIUM 
<TABLE class=t_table align=center>
<TBODY>
<TR>
<TD width=399 colSpan=2>
FILM RESOLUTION LOSS TEST-STADIUM 評分標準</TD></TR>
<TR>
<TD width=87>
10</TD>
<TD width=312>沒有波紋或閃爍在看台上出現</TD></TR>
<TR>
<TD width=87>
0</TD>
<TD width=312>看台上出現波紋或閃爍</TD></TR></TBODY></TABLE>
 
 
真實的高清回放片斷來實際考察圖形硬件的畫面回放能力。 
體育場視頻回放，兩個機器都表現不錯，視頻從右向左橫向移動時，看台網格清晰可見，並沒有出現閃爍現象. 
<A href="http://www.mysilu.com/attachments/day_090906/090906194081347ee524fe6928.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906194081347ee524fe6928.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906194081347ee524fe6928.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/090906194016045c32d2d30198.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906194016045c32d2d30198.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906194016045c32d2d30198.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
1073-影片分辨率損失測試原始拍攝Raw100%大小局部截圖 
<A href="http://www.mysilu.com/attachments/day_090906/0909062259b9705f9db384d5e8.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909062259b9705f9db384d5e8.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909062259b9705f9db384d5e8.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
 
8635-影片分辨率損失測試原始拍攝Raw100%大小局部截圖 
<A href="http://www.mysilu.com/attachments/day_090906/090906225906c757e12b51d020.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906225906c757e12b51d020.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906225906c757e12b51d020.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>

土匪 · 發表於 2009-11-27 15:59:42

VIDEO RECONSTRUCTION TESTS（視頻平滑反鋸齒）
<A href="http://www.mysilu.com/attachments/day_090906/090906194890b382205a7b239c.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/090906194890b382205a7b239c.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/090906194890b382205a7b239c.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
VIDEO RECONSTRUCTION TESTS 
<TABLE class=t_table align=center>
<TBODY>
<TR>
<TD width=399 colSpan=2>
VIDEO RECONSTRUCTION TESTS 評分標準</TD></TR>
<TR>
<TD width=87>
20</TD>
<TD width=312>三個線條全部邊緣平滑</TD></TR>
<TR>
<TD width=87>
10</TD>
<TD width=312>頂端兩個線條平滑 底部有鋸齒 </TD></TR>
<TR>
<TD width=87>
5</TD>
<TD width=312>只有頂端一個線條平滑</TD></TR>
<TR>
<TD width=87>
0</TD>
<TD width=312>三個線條均有鋸齒</TD></TR></TBODY></TABLE>
 
 
通過三個快速移動的線條，用來測試視頻系統對於快速運動物體的鋸齒消除能力。要想獲得滿分，必須三個線條邊緣平滑。與3D方面類似，視頻播放如果處理不當也會出現“鋸齒”問題，這主要是由於原始視頻轉換成為隔行電視信號這一過程造成。為了重建這部分丟失的數據，很多視頻處理器從運動物體區塊的前後兩幀相同位置獲得像素數據（道理類似於噪點消除的時間過濾技術）。但由於運動補償需要獲取的像素範圍更大，因此物體邊緣的像素很容易丟失，尤其是對角斜線這種位置容易出現鋸齒。高品質的視頻處理器能夠盡可能的減少鋸齒（類似於3D遊戲的抗鋸齒技術），方法就是通過複雜的斜向插值算法或者是過濾。 
 
<A href="http://www.mysilu.com/attachments/day_090906/09090619482c8e0495ae4b7040.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090619482c8e0495ae4b7040.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090619482c8e0495ae4b7040.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/0909061948852cd6c2f6855ff3.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909061948852cd6c2f6855ff3.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909061948852cd6c2f6855ff3.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
<A href="http://www.mysilu.com/attachments/day_090906/09090619484fb97c5f9eedd02a.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/09090619484fb97c5f9eedd02a.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/09090619484fb97c5f9eedd02a.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> <A href="http://www.mysilu.com/attachments/day_090906/0909061948ceee8365c533acb0.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909061948ceee8365c533acb0.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909061948ceee8365c533acb0.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>
 
1073-視頻平滑反鋸齒原始拍攝Raw 100%大小局部截圖 
<A href="http://www.mysilu.com/attachments/day_090906/0909062009cdd098a0235a8ea1.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909062009cdd098a0235a8ea1.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909062009cdd098a0235a8ea1.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A> 
8635-視頻平滑反鋸齒原始拍攝Raw 100%大小局部截圖
<A href="http://www.mysilu.com/attachments/day_090906/0909062023b9e63da89b18e7ff.jpg" target=_blank><IMG onmousewheel="return imgzoom(this)" onmouseover="attachimg(this, 'mouseover')" onclick="attachimg(this, 'click', 'http://www.mysilu.com/attachments/day_090906/0909062023b9e63da89b18e7ff.jpg.thumb.jpg')" alt="" src="http://www.mysilu.com/attachments/day_090906/0909062023b9e63da89b18e7ff.jpg.thumb.jpg" onload="attachimg(this, 'load', 'Click here to open new window\nCTRL+Mouse wheel to zoom in/out')" border=0></A>

yy09 · 發表於 2009-12-1 17:10:42

拍拍手, 雖然看沒

selenaloo · 發表於 2009-12-1 19:43:34

我選擇1283
因為可以錄影<IMG alt="" src="http://www.hd.club.tw/images/smilies/41.gif" border=0 smilieid="124">

lcy623 · 發表於 2009-12-1 23:34:18

光是剪輯這些資料就要花很多時間
土匪版主真是用心
謝謝提供.........

陳泰宇 · 發表於 2009-12-2 07:47:46

我買過海美迪HD-300A[1073]，在我的國際電漿P42G10W看時，我覺得畫質我看不習慣，所以使用三小時後就轉手售出！若以原作者[謝謝土匪兄整理]提供的圖片做比較，我喜歡8635的〝真實感〞！純粹個人感覺，不喜勿怪！畢竟這種東西全看個人需求與認知，所以認定上各自不同！

leonchi · 發表於 2009-12-2 22:27:28

Realtek 1073色溫及對比度的預設值看起來的確比較討喜。 乍看之下銳利度似乎比 Sigma 8635好，或許是對比度較大的關係，有些地方甚至有點銳過頭了，階調的連續性較弱。 Sigma 8635色溫看起來的確比較不討喜，甚至亮度較暗，但階調的確比Realtek 1073豐富多了，輪廓邊緣也較平順。 色溫和對比都可以透過調電視或播放機來修正，但色彩還原跟階調及輪廓的細膩程度，應該是一出廠就決定了吧。