From DXOMark: More pixels offsets noise3

Started May 30, 2009 | Discussions thread
Steen Bay Veteran Member • Posts: 7,418
Bob..

Just one question. You said in the other thread that a gaussian blur before downsampling wouldn't affect detail/sharpness (and Emil said that it would reduce noise in the downsampled image), but you also said in a reply to zxaar that "you cannot know which pixels are 'noisy' that is the nature of noise". So, how can gaussian blur remove noise, without removing detail at the same time?

And btw, Phil's reply is still there, in the first thread :

http://forums.dpreview.com/forums/read.asp?forum=1018&message=31922021

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tko
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