window2009 wrote:我也感覺Canon的製程應該也是落後,但我感覺如果canon如果沒用新的製程就做出五千萬,那我也只能佩服她的毅力了~ 印象中兩三年前canon就相繼說有製造六千萬和一億兩千萬的實力了,現在等於把它量產,所以我很期待評測到底會怎樣!!!!!?
不過.....首先Canon已澄清該cmos不是Sony新產而是自家生產的!
而事實上大家都看到C家的感光元件製程落後Sony不少~只是不斷地優化~或許快到極限........(恕刪)
原文節錄
"It's convenient to think of the new 50MP as essentially an upscaled version of the 20MP sensor inside the EOS 7D Mark II - minus the 7D II's Dual-pixel AF. The pixel pitch of 4.14 microns is certainly very similar across both sensors. Accordingly, Canon tells us that at a pixel level, noise levels should be very similar to the EOS 7D Mark II and slightly better than what we'd expect from a 5D Mark II (note: not a 5D Mark III). Oddly though, maximum ISO sensitivity is capped at ISO 6400, which extends only up to 12,800. Even more oddly, a Canon representative openly described this limitation as ‘arbitrary'. This is strange because the EOS 7D Mark II (remember the pixel pitch of its sensor is almost the same) can confidently shoot at ISO sensitivity settings up to 51,200.
Speaking of the EOS 7D Mark II, the new 5DS and 5DS R inherit its 150,000 pixel metering sensor, so although the cameras' 61-point phase-detection AF arrays are the same as the EOS 5D III, subject tracking should be (and seems to be, from our very brief first impressions) superior to the older model albeit, oddly, not up to the level of speed and accuracy offered by Canon's own 1D X, or Nikon's recent implementations of 3D tracking.
As far as dynamic range is concerned, we're told that the new 5DS and 5DS R should give the same performance as the current EOS 5D Mark III. If true, this means that the new cameras won't be able to offer the same industry-leading dynamic range of Sony's current APS-C and full-frame sensors, but at least it isn't a step backwards. And hey - 50MP!"
噪點表現近乎7D II 比 5DII 好一點
動態範圍近乎5DIII
但是我們有50MP!!!

日本網站交叉比對 CMOS 外觀(包括鍍膜顏色、針腳數)和通信方式之後
得出 5Ds/5DsR 這兩顆確實是 Canon 製造
內文另有附上 D810 和 A7S 的 CMOS 外觀,兩塊長得差不多,但都跟 Canon 的不一樣
window2009 wrote:
小弟是由Nikon ...(恕刪)
動態範圍這東西一直都是CANON心中的痛
光是拿canon最強的機種跟其他家廠牌來做比較就好
動態範圍比較
window2009 wrote:
小弟是由Nikon ...(恕刪)
動態範圍這東西一直都是CANON心中的痛
光是拿canon最強的機種跟其他家廠牌來做比較就好
byrianshih wrote:
from dprev...(恕刪)
其實你說的五千萬像素對畫質<好像>有一點的優化效果~縮圖無爛圖嘛....
但似乎是誤會我的意思了~我說的是DR動態範圍~~就是說在一個極高反差的環境下能一張RAW檔把爆掉的高光和黑掉的暗部拉回來!
我求的只是低iso時能有變態的動態範圍~我才不管高iso怎樣.....A7s和A7r就是一個例子~前者雖然有強勁的高iso~但對於反差還是沒法跟A7R比較~
可惜的是C家到現在也是處於沒什麼進步的瓶頸~原因不外乎是製程和電路上解決不了~這個是靠軟體沒法補救的~
根據樓上大大的說法也論証了一點~~如果DR是Sony的強項而且沒有授權給Canon~那就是Sony的Cmos電路設計C家不能用~或者是專利的問題吧~~
假若5Ds的DR跟7D2差不多的話....我認為DR的情況機乎沒有改善.....
增加像素的5Ds由於縮圖的關係看起來畫質很好沒錯~但對於風景來說就不是很好了~高反差要多拍幾張不用說~還要小心震動的問題~
我認為這機子不是給我們這些業餘用的
不過有件事情我很好奇~既然當初D800E也是跟5Ds是用同樣的方法去除低通~難道這也不是Sony或Nikon的專利嗎? 為何Canon可以用? 是因為Sony不給? 還是.....?
(直到這裡也是自己的想法...等評測出來才能解開一切的迷團~也希望我說的都不對~而是C家終於拿出秘密武器了

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