01-13-2012, 09:34 AM
[quote name='mst' timestamp='1326396293' post='14818']
Sure: M9.
And there are of course also cameras with symmetrical AA filters (all three current Nikon test cameras for example).
-- Markus
[/quote]
Can I conclude from the above that you tested the M9 yourself and observed symmetrical resolution? Sorry if I am a bit persistent on this, but I am just wondering why Sony would use only a single AA filter. NEX cameras are well known for aliasing. I observe this a lot myself (it is not something I mind, I like the way a NEX can render fine detail in landscape photography). The thing is, when I look at a picture from a Siemens star (for lack of a better name), I see no asymmetry at all. When looking at resolution plots where vertical and horizontal are split up (the sets of lines of which the distance gets smaller and smaller), I do see a difference, although there is aliasing on both the horizontal and the vertical axis. What I am asking is, if it is certain this is caused by an AA filter (a single filter, only one direction), or that it is a result of the used demosaicing algorithm. That algorithm is part of the chain true which we observe the resolution. Or did I miss something altogether and are there brands that specify they have used an asymmetrical AA filter?
Sure: M9.
And there are of course also cameras with symmetrical AA filters (all three current Nikon test cameras for example).
-- Markus
[/quote]
Can I conclude from the above that you tested the M9 yourself and observed symmetrical resolution? Sorry if I am a bit persistent on this, but I am just wondering why Sony would use only a single AA filter. NEX cameras are well known for aliasing. I observe this a lot myself (it is not something I mind, I like the way a NEX can render fine detail in landscape photography). The thing is, when I look at a picture from a Siemens star (for lack of a better name), I see no asymmetry at all. When looking at resolution plots where vertical and horizontal are split up (the sets of lines of which the distance gets smaller and smaller), I do see a difference, although there is aliasing on both the horizontal and the vertical axis. What I am asking is, if it is certain this is caused by an AA filter (a single filter, only one direction), or that it is a result of the used demosaicing algorithm. That algorithm is part of the chain true which we observe the resolution. Or did I miss something altogether and are there brands that specify they have used an asymmetrical AA filter?