03-27-2012, 10:46 AM
[quote name='Klaus' timestamp='1332663195' post='17023']
The results are not cross system comparable.
If this simple sentence is not understood we can't help it anymore.
The NEX 7 has no AA filter on the horizontal axis. At the current settings the LW/PHs are at 3800 here - thus close to Nyquist. If I chose more aggressive setting this value would have been WAY beyond Nyquist. We can argue that Imatest can look a bit beyond Nyquist (although I don't really want to argue here anymore) but there are limits to this. Thus 3800 is very reasonable here.
The filtering on the vertical axis is stronger. On the average we are at 3400.
Canon and Nikon have a symmetrical AA filter so there's no real risk to end way beyond Nyquist here.
[/quote]
With what lens did you reach that 3400 figure? I have not seen anything that goes beyond 3100 yet, which seems kind of ridiculous. Especially since I see clear aliasing with the CZ85mm. And although I get your reason for being careful, it still seems like you push the performance of all the lenses down for this.
The results are not cross system comparable.
If this simple sentence is not understood we can't help it anymore.
The NEX 7 has no AA filter on the horizontal axis. At the current settings the LW/PHs are at 3800 here - thus close to Nyquist. If I chose more aggressive setting this value would have been WAY beyond Nyquist. We can argue that Imatest can look a bit beyond Nyquist (although I don't really want to argue here anymore) but there are limits to this. Thus 3800 is very reasonable here.
The filtering on the vertical axis is stronger. On the average we are at 3400.
Canon and Nikon have a symmetrical AA filter so there's no real risk to end way beyond Nyquist here.
[/quote]
With what lens did you reach that 3400 figure? I have not seen anything that goes beyond 3100 yet, which seems kind of ridiculous. Especially since I see clear aliasing with the CZ85mm. And although I get your reason for being careful, it still seems like you push the performance of all the lenses down for this.