dfperrault Posted January 24, 2021 Share Posted January 24, 2021 I need to measure a laser generated grid 0.25mm width (4lp/mm) at 5 meters w/ 75% Contrast. Does anyone think that I would not be able to resolve that with a canon 135mm f/2.0 L, or the 200mm f/ 2.8L II lens at f/2.8? The MTF for both at 10LP/mm, 1.0 /1.5meters is 90% across the full field. Link to comment Share on other sites More sharing options...
Charles_Webster Posted February 2, 2021 Share Posted February 2, 2021 I need to measure a laser generated grid 0.25mm width (4lp/mm) at 5 meters w/ 75% Contrast. Does anyone think that I would not be able to resolve that with a canon 135mm f/2.0 L, or the 200mm f/ 2.8L II lens at f/2.8? The MTF for both at 10LP/mm, 1.0 /1.5meters is 90% across the full field. You might get an answer in the Canon EOS forum. This is a forum for lessons and classes. Link to comment Share on other sites More sharing options...
William Michael Posted March 15, 2021 Share Posted March 15, 2021 Moved to Canon EOS Forum. Link to comment Share on other sites More sharing options...
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