05-21-2011, 09:57 AM
[quote name='popo' timestamp='1305967448' post='8713']
Since this is *still* being bought up, again I reiterate I acknowledge that *some* luminance information can be gathered by the others, but their value is significantly lower in that role.
Also, for fun let's read the original Bayer pattern "Color imaging array" Patent. At least I would in more detail if I wasn't leaving for a shoot in a moment.
[/quote]
Also, for fun notice the difference in detail different RAW converters get.
I can't make it different, the AA-filter is pixel pitch based, not Bayer pattern based, and the green, red and blue all have pretty much equal amounts of luminance information (Bayer CFA gives in the order of 6.4% less luminance information, this is NOT detectable with our eyes looking at images). It is upto the RAW converter method juts how much information gets extracted.
The big difference in looks of a Foveon/Sigma camera and a Bayer CFA camera with AA-filter, is just the AA-filter.
AA-filterless Bayer CFA sensors start o show the same "detail", the same aliasing stair stepping PER PIXEL.That is why some people prefer having the AA-filter removed.
Personally, I do not care too much for the oversharpened look of AA-filterless images.
Anyway, the Leica M9 is the easiest camera to look for Bayer CFA AA-filterless images for,
I know that the original patent filers called the green sensels "luminance sensitive" and the red and blue ones "chrominance sensitive", but that is jut how those inventors looked at it.
CFA demosaicing has made HUGE strides since then, and with it the view of how much luminance detail can be extracted from every colour channel.
This is true for both AA-filterless and AA-filtered sensors.
Since this is *still* being bought up, again I reiterate I acknowledge that *some* luminance information can be gathered by the others, but their value is significantly lower in that role.
Also, for fun let's read the original Bayer pattern "Color imaging array" Patent. At least I would in more detail if I wasn't leaving for a shoot in a moment.
[/quote]
Also, for fun notice the difference in detail different RAW converters get.
I can't make it different, the AA-filter is pixel pitch based, not Bayer pattern based, and the green, red and blue all have pretty much equal amounts of luminance information (Bayer CFA gives in the order of 6.4% less luminance information, this is NOT detectable with our eyes looking at images). It is upto the RAW converter method juts how much information gets extracted.
The big difference in looks of a Foveon/Sigma camera and a Bayer CFA camera with AA-filter, is just the AA-filter.
AA-filterless Bayer CFA sensors start o show the same "detail", the same aliasing stair stepping PER PIXEL.That is why some people prefer having the AA-filter removed.
Personally, I do not care too much for the oversharpened look of AA-filterless images.
Anyway, the Leica M9 is the easiest camera to look for Bayer CFA AA-filterless images for,
I know that the original patent filers called the green sensels "luminance sensitive" and the red and blue ones "chrominance sensitive", but that is jut how those inventors looked at it.
CFA demosaicing has made HUGE strides since then, and with it the view of how much luminance detail can be extracted from every colour channel.
This is true for both AA-filterless and AA-filtered sensors.