![]() If you are considering a secondhand purchase you can plug up the lens in question, run the tests and know with confidence if you are getting a better than average lens, or if somone is trying to move a pig, or a damaged lens. I'm not sure if the lesser version does all the lens comparisons graphing. ![]() I went with the pro version and no complaints at all. I did it with my 7D2 using DotTune and it was a royal pain. No, I just want to calibrate my lenses well. Unless you are a techie and like checking esoteric stuff. If all of your lenses are <400mm, prob don't need Pro version.
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