10-01-2010, 11:23 AM
[quote name='Brightcolours' timestamp='1285930459' post='3420']
It is not just a claim. Sharpness does not come from the colour information, but from luminance information. The luminance information is based on the information per pixel, mostly.
So, yes, a Bayer sensor without AA-filter gets about the same resolution as a foveon sensor without AA-filter.
[/quote]
Hm. I was pretty sure that only half of the photo-sites in the Bayer sensor provide luminance information, and the remaining half (chroma sites) have that data interpolated from the neighbouring ones. While Foveon has 100% of photo-sites to provide the luminance data. So unless I'm totally wrong here, it's quite difficult to believe that, say, 10mpix interpolated from 5mpix would have the same sharpness as natural 10mpix image. With AA filter of without.
It is not just a claim. Sharpness does not come from the colour information, but from luminance information. The luminance information is based on the information per pixel, mostly.
So, yes, a Bayer sensor without AA-filter gets about the same resolution as a foveon sensor without AA-filter.
[/quote]
Hm. I was pretty sure that only half of the photo-sites in the Bayer sensor provide luminance information, and the remaining half (chroma sites) have that data interpolated from the neighbouring ones. While Foveon has 100% of photo-sites to provide the luminance data. So unless I'm totally wrong here, it's quite difficult to believe that, say, 10mpix interpolated from 5mpix would have the same sharpness as natural 10mpix image. With AA filter of without.