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Advice for fixing autofocus issue on Canon EF 100mm Macro USM?
Advice for fixing autofocus issue on Canon EF 100mm Macro USM? I have a 100mm macro lens (Non IS / L version) that has almost never been used, bought new from canon many years ago.. But now that I want to use it, I'm finding it cannot autofocus at all? My cameras are 6D MK I and 5D MK IV. The 6D it will at least attempt a slight turn but wont autofocus if the subject is more than a couple mm out of perfect ...
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