Here we go again with the sharpness questions. I realize that "sharpness" is a subjective term and that perceived sharpness depends on many factors so I'll try to ask an answerable question.
In searching for posts relating to optimum taking lens aperture I found this. It was written by a knowledgable person associated with this website.
"Stopping down more than necessary will result in loss of sharpness due to diffraction. All lenses are limited in resolution to about 1500/N line pairs per mm (the actual resolution on film will be slightly lower since it is a product of lens and film resolutions). At f16, this is 93 lpm, f22:68, f32:46, f45:33, f64:23."
I realize that smaller lens openings are often necessary for good DOF and I routinely shoot between f22 and f32 with my LF lenses. I do a lot of landscapes and I love the look of near to far "sharpness."
Last weekend I used my new Symmar XL 80 and I'm pleased with its performance. I got to wondering if there's an optimum lens opening for this lens (and my others.) I looked at the Schneider website and found lots of graphs and stuff but I'll be damned if I can find anything that helps me.
(Shut up and ask the questions !)
Is there an optimum lens opening for this lens ? Is it f16 as stated two paragraphs ago ? If all lenses have the same resolving power why not simply buy less expensive lenses ?
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