Sigma/Foveon Questions
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From: nospam on 13 May 2010 02:46 In article <MPG.2655bbae61d5534f98c2ec(a)news.supernews.com>, Alfred Molon <alfred_molon(a)yahoo.com> wrote: > > The only key question is, does the sensor produce a > > good picture. > > The question is the effective resolution. no, the question is the end result. > And here a sensor like Bayer, > in which to reconstruct an image you need to use data from neighbouring > pixels, fails at the pixel level. so what? are you taking photos or analyzing individual pixels, one by one? > Bayer simply does not have the > resolution at the pixel level, i.e. a 12MP Bayer sensor has an effective > resolution which is lower. Bayer produces good pictures, but the > effective resolution is lower than the nominal. except that bayer has as much as 5x as many pixels, so it doesn't really matter what it does at the pixel level.
From: David J Taylor on 13 May 2010 11:02 "Alfred Molon" <alfred_molon(a)yahoo.com> wrote in message news:MPG.2655bc1136161edd98c2ed(a)news.supernews.com... [] > The key point is that a sensor like Foveon does not rely on > interpolation from neighbouring pixels to reconstruct the image. That is > a very, very essential difference. Instead, it relies on colour interpolation, and as the eye is rather sensitive to hue, that may account for the reports of poor colour accuracy from current implementations of the Foveon. Cheers, David
From: Alfred Molon on 13 May 2010 11:49 Yawn - do we need to reopen this discussion?
From: Ray Fischer on 15 May 2010 00:13
Alfred Molon <alfred_molon(a)yahoo.com> wrote: >@k2g2000yqe.googlegroups.com>, dmaster says... >> The only key question is, does the sensor produce a >> good picture. > >The question is the effective resolution. And here a sensor like Bayer, >in which to reconstruct an image you need to use data from neighbouring >pixels, fails at the pixel level. Bayer simply does not have the >resolution at the pixel level, That is complete nonsense. "At the pixel level" there is no such thing as resolution. There is only a pixel. > i.e. a 12MP Bayer sensor has an effective >resolution which is lower. "Lower" than what? An 18MP sensor? A 10MP monochrome sensor? > Bayer produces good pictures, End of discussion. -- Ray Fischer rfischer(a)sonic.net |