[quote name='Kozuch' timestamp='1280403014' post='1380']
Regarding the usability of lab results for concrete sensor - I did not really understand what you meant by this. Do you mean maybe the ability of a sensor to reach a certain resolution?
[/quote]
No. If we published pure resoultion data of a lens measured with an optical lab, the question really is: how well does this lens behave on a given sensor? Will a lens with "average" resolution still be usable on a current DSLR with high MP count?
As brightcolours correctly put it: the essence of our reviews is to have comparable data, not absolute data. And unless someone of the PZ team wins the lottery we need to have a measurement workflow that is affordable, reproducable as well as fast. A lab just doesn't work for us, especially not a home made one. We would not only have to count 2000 lines once, but once for every measurement spot (center, border, corner), every aperture and focal length measured and any of the x shots taken for a given aperture and focal lenght (x usually in the range of 20 to 40, since we use careful manual focus bracketing to find the maximum resolution). No way <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='
' />
-- Markus
Regarding the usability of lab results for concrete sensor - I did not really understand what you meant by this. Do you mean maybe the ability of a sensor to reach a certain resolution?
[/quote]
No. If we published pure resoultion data of a lens measured with an optical lab, the question really is: how well does this lens behave on a given sensor? Will a lens with "average" resolution still be usable on a current DSLR with high MP count?
As brightcolours correctly put it: the essence of our reviews is to have comparable data, not absolute data. And unless someone of the PZ team wins the lottery we need to have a measurement workflow that is affordable, reproducable as well as fast. A lab just doesn't work for us, especially not a home made one. We would not only have to count 2000 lines once, but once for every measurement spot (center, border, corner), every aperture and focal length measured and any of the x shots taken for a given aperture and focal lenght (x usually in the range of 20 to 40, since we use careful manual focus bracketing to find the maximum resolution). No way <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='
' />-- Markus
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