Am I oversharpening
in [Digital Cameras]
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From: Bart van der Wolf on 30 May 2005 22:18 <george_preddy(a)yahoo.com> wrote in message news:1117496463.294846.290480(a)g14g2000cwa.googlegroups.com... > > > Bart van der Wolf wrote: >> <george_preddy(a)yahoo.com> wrote in message >> news:1117486367.148808.280940(a)g49g2000cwa.googlegroups.com... SNIP >> > Bayers record a 400% upscale by default, [...] >> >> Nonsense, again, as usual. > > Only if you were fooled into thinking a 1DMkII has 8MP of full color > sensors. But then you should know it, I assume/hope/doubt. Upscaling has nothing, nada, zip, to do with it. Like in any Bayer pattern filtered sensor array, each sensel captures roughly 1/3rd of the human visible spectrum, due to color filters on each sensel. Demosaicing interpolates 2/3rd of the chromaticity from the contribution from several neighboring sensels, and complements the luminocity. > Most buyers, no doubt, were fooled like you. And you base that assertion on ... personal experience? > A 1DMkII only is only 8MP-monochrome, not 8MP-full-color. Do you understand the difference between monochrome and a spectral band? Apparently not. > That's why it isn't competitive in terms of optical full color > resolution with a 3.5MP-full-color Foveon image. See... > > http://www.pbase.com/sharpness Why is the "Original 1D Mk II crop, as shot" the same size as the "Downsized..." version? More snake-oil from Steve Giovenella? Are you trying (in vain as usual) to pull a preddy? Bart
From: george_preddy on 31 May 2005 00:26 Bart van der Wolf wrote: > > Only if you were fooled into thinking a 1DMkII has 8MP of full color > > sensors. > > But then you should know it, I assume/hope/doubt. > Upscaling has nothing, nada, zip, to do with it. Except that there is only 2MP of full color information in the 8MP recording. > > A 1DMkII only is only 8MP-monochrome, not 8MP-full-color. > > Do you understand the difference between monochrome and a spectral > band? Apparently not. Bayer sensors are all strictly monochrome. A color has to be interpolated by digitally overlaying many monochrome photosites. > > That's why it isn't competitive in terms of optical full color > > resolution with a 3.5MP-full-color Foveon image. See... > > > > http://www.pbase.com/sharpness > > Why is the "Original 1D Mk II crop, as shot" the same size as the > "Downsized..." version? It's not. Duh.
From: Bart van der Wolf on 31 May 2005 07:09 <george_preddy(a)yahoo.com> wrote in message news:1117513572.872817.98990(a)g44g2000cwa.googlegroups.com... > > > Bart van der Wolf wrote: SNIP >> Do you understand the difference between monochrome and >>a spectral band? Apparently not. > > Bayer sensors are all strictly monochrome. Which again proves my point, you seem clueless. Bart
From: george_preddy on 31 May 2005 22:58 Bart van der Wolf wrote: > <george_preddy(a)yahoo.com> wrote in message > news:1117513572.872817.98990(a)g44g2000cwa.googlegroups.com... > > > > > > Bart van der Wolf wrote: > SNIP > >> Do you understand the difference between monochrome and > >>a spectral band? Apparently not. > > > > Bayer sensors are all strictly monochrome. > > Which again proves my point, you seem clueless. But you really are. You learned something today. When a Bayer camera says "8MP" that means "8MP MONOCHROME", not 8M full color pixels. I can't believe you didn't know that.
From: Bart van der Wolf on 1 Jun 2005 06:20
<george_preddy(a)yahoo.com> wrote in message news:1117594696.335653.87000(a)z14g2000cwz.googlegroups.com... > > > Bart van der Wolf wrote: >> <george_preddy(a)yahoo.com> wrote in message >> news:1117513572.872817.98990(a)g44g2000cwa.googlegroups.com... >> > >> > >> > Bart van der Wolf wrote: >> SNIP >> >> Do you understand the difference between monochrome and >> >>a spectral band? Apparently not. >> > >> > Bayer sensors are all strictly monochrome. >> >> Which again proves my point, you seem clueless. > > But you really are. You learned something today. > > When a Bayer camera says "8MP" that means "8MP MONOCHROME", not 8M > full > color pixels. I can't believe you didn't know that. It was already clear that you don't understand the difference between monochrome (single color), and spectral band. Each sensel is natively sensitive to a spectrum of roughly 350 to 1000 nm, and filters restrict that to 3 (sometimes 4) slightly overlapping spectral bands. Bart |