>> 道理其實很簡單 , 大部分的使用者其實使用 DSLR 產生的 Jpeg 就可以接受了 , 不會涉及到較為專業的 RAW 檔處理 , 所以不足以凝聚炒翻天的族群 .

而 Canon DDP 的 Raw 轉 Jpeg 的確沒有差到令人想砸電腦的程度 , 只能說還 OK 啦 , 我相信許多人像我一樣 , 心裡面總覺得與期待有一段差距 , 以為銳化是必要之惡 , 很容易就這樣渾渾噩噩的做下來 , 一直到有高人指點 , 才恍然大悟 ...

總之 , 實驗是檢驗真理的唯一標準 ... 如果不信 ... 實作一遍答案不就出來了 ?<<

你恐怕太小看天下人了。全世界使用 Canon 器材的頂尖高手不計其數，使用 raw 檔的人也沒有你想像的那麼少。

我相信實際情況不是那些頂尖高手沒有發現問題，而是有些人不會使用軟體。

我隨便在網路上搜尋一遍，找到這段評論或許可以讓各位參考：

I've read through the whole thread now and the only thing I could come up with is, this sharpening problem is that DPP sharpens the on-screen image instead of the whole image. This is done to save processing time.

This is not a flaw but a program design decision. Photoshop doesn't sharpen after the image is reduced in size for viewing on screen, nor does irfanview or C1. Picasa does sharpen a little after a resize.

So if you sharpen the whole image (all pixels) and then reduce it to view on screen, sharpness appears to be less.

If you first reduce the size then sharpen it, it will appear much sharper (this is what dpp does).

So the comments of some replies to view your image at 100% is still valid as it will show you that the dpp preview @100% is the same as the converted tiff or jpg.

See this example. DPP processed image, raw sharpening set to max. I've set dpp to zoom in to 200% and took a screen grab. Then I converted the image to a 16 bit tiff, opened in photoshop, cropped the same area to 200% with nearest neighbor resize. No discernible difference:

Image control: Zoom out | Zoom 100% | Zoom in | Expand / Contract | New window

I think the dpp sharpening is ugly anyway so I don't use it :) See:
http://forums.dpreview.com/forums/read.asp?forum=1031&message=20652828

As to the color difference, that's mainly down to the color management settings. I've profiled my screen to 6500K with spyder2. DPP set to sRGB working space, photoshop to sRGB working space, windows set to monitor profile (spyder2). When color proofing in photoshop set in view/proof setup to monitor profile for accurate onscreen colors. Difference is minimal if you've calibrated your setup. It can be more of a difference on a laptop screen calibrated to native white point. All colors match from app to app and screen to print within acceptable margins.

Have a nice weekend!
imqqmi

Montana500 wrote:
> A couple posters made the great suggestion of converting images
> inside DPP, then reviewing them in DPP. Well, here I have a shot
> of a bear, one with the original RAW, and one in converted TIFF.
> Bot have the exact same settings, but one image looks far superior
> to the other in terms of sharpness and definition. It seems DPP is
> "lost in translation" so to speak. The difference in sharpness is
> simply amazing when looking at the tree trunks and the bear's fur.
> Any Canon reps out there to comment on this?
>
>
> converted TIFF in DPP:

連結：

http://forums.dpreview.com/forums/read.asp?forum=1031&message=20466939