03-20-2011, 04:22 PM
[quote name='flektogon' timestamp='1300627252' post='6962']
In addition, what do those 2350 (K10) and 2700 (K-5) maximum resolution numbers represent? They are not Nyquest frequencies for sure. If they were the maximum resolution numbers, then yes, you could say that the identical (from the resolution point of view) lens would resolve for example 95% of the maximum resolution of a given sensor. So, do we know what are those numbers? And how they were obtained? Using some exteremely sharp lens with almost unlimited resolution?
Thanks.
[/quote]
Photozone has a way of measuring a bit past the nyquist limit. It does not really matter, though, how photozone gets its maximum achievable value.. as long as they do it the same for each camera.
Th point I made remains the same: you can compare lenses from different bodies, just by looking at the graph itself and ignoring the values. This will give a good enough impression to know how a lens performs.
In addition, what do those 2350 (K10) and 2700 (K-5) maximum resolution numbers represent? They are not Nyquest frequencies for sure. If they were the maximum resolution numbers, then yes, you could say that the identical (from the resolution point of view) lens would resolve for example 95% of the maximum resolution of a given sensor. So, do we know what are those numbers? And how they were obtained? Using some exteremely sharp lens with almost unlimited resolution?
Thanks.
[/quote]
Photozone has a way of measuring a bit past the nyquist limit. It does not really matter, though, how photozone gets its maximum achievable value.. as long as they do it the same for each camera.
Th point I made remains the same: you can compare lenses from different bodies, just by looking at the graph itself and ignoring the values. This will give a good enough impression to know how a lens performs.