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Uzay, I am sure you know how difficult it's to manually focus f/1.2 lenses, especially hand-held.
Live View is your friend. Maximum zoom in LV, magnifying loupe, cable release, MUP, patience following moving branches and few attempts will get desired part of a subject in decent focus
This shot was taken the same way. Check the 100% crop of dotted numbering, especially spacing between dots. This ain't a macro lens, but not too bad either. Said that, personally I don’t expect or want pictures taken at f/1.2 to be sharp.