10-01-2010, 01:45 PM
[quote name='Lomskij' timestamp='1285932195' post='3422']
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.
[/quote]
All "sites" deliver luminance information. Only interpolation of the data can give colour. It depends on the RAW converter just how much luminance information is being extracted, some are better at that than others. And of course, interpolation between the sensel values play part in it.
But it is wrong to think that because of interpolation luminance information (or data) is half of that of foveon sensors, that is simply untrue and just shows a lack of insight in the matter.
Which again still misses the major point: the sharpness of AA-filterless sensors is mostly FAKE detail. That you can measure fake detail as normal detail and think you get a lot higher resolution is of course true. Does not make the validity of the detail higher, though.
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.
[/quote]
All "sites" deliver luminance information. Only interpolation of the data can give colour. It depends on the RAW converter just how much luminance information is being extracted, some are better at that than others. And of course, interpolation between the sensel values play part in it.
But it is wrong to think that because of interpolation luminance information (or data) is half of that of foveon sensors, that is simply untrue and just shows a lack of insight in the matter.
Which again still misses the major point: the sharpness of AA-filterless sensors is mostly FAKE detail. That you can measure fake detail as normal detail and think you get a lot higher resolution is of course true. Does not make the validity of the detail higher, though.