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I have a quantaray 50mm f2.8 macro 1:1 which I picked up used. Upon testing subjects, I realised that this lens changes magnification as focus changes. Does this mean this is a varifocal lens. If that is the case, how to do focus stacking without messing the magnification.
The below shot was taken without tripod.
Hibiscus close-up by ramkumar999, on Flickr