Craig Gillette
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I've never done technically rigorous controlled tests of mine, or of any of my lenses. You might want to compare to testing done by a competent reviewer, testing site, etc.
I did test one lens against some of my others when it seemed to give consistently underwhelming results in use. Even then I tested by shooting it in the same simulated use conditions against lenses that happened to have overlap so the same f stop and focal length. So, it seemed softer than the others under the same circumstances as opposed to at least similar or better. Away it went. I replaced it with a different lens so didn't have two directly compared.
If you have a lens you think is acceptable with the same focal length and aperture, test shots under the same settings, would give a comparison that you might be able to look at besides just a set of test patterns. If the method is flawed, it should be flawed with both, etc. That and a comp against a good site should give you an idea on that copy, if nothing else.
I don't recall anything that I've shot in the vein of a flat surface like a brick wall, etc., so there's typically different distances across the field/subject.
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