Olympus 4/3 Lenses on Micro 4/3 bodies. Why does AF suck?

Started May 15, 2012 | Discussions thread
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ssssnake
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Olympus 4/3 Lenses on Micro 4/3 bodies. Why does AF suck?
May 15, 2012

I have an Olympus 50-200 zoom that's made for a 4/3 camera.

I bought the new Olympus adapter and put it on my OMD EM-5.

Autofocus is really really bad. It's slow, and can't lock onto anything, even in good light. The lens is pretty much only usable in manual focus mode.

Why?

What's so different about these formats that a lens that focuses lightning fast on a 4/3 body can't focus at all on a micro 4/3 body from the same company using an Olympus factory adapter?

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