No professional lens will have a STM because USM is still superior in terms of autofocus speed (for stills).
My personal wish for 70-200L f2.8 IS USM III would be that it would have more robust switches, as my IS ON/OFF and AF/MF get switched when I swap dslr position from normal to portrait and that costed me many good photos.
My personal wish for 70-200L f2.8 IS USM III would be that it would have more robust switches, as my IS ON/OFF and AF/MF get switched when I swap dslr position from normal to portrait and that costed me many good photos.
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