I tried to mount one of my OM->4/3 adapters on my E-P1 - too big. I'm not
surprised actually as I reckon Oly would have copped it from a whole lot of
customers who mounted a 4/3 lens on an m4/3 body and found it didn't focus.
Perhaps pick up some cheap OM tubes, they seem to be plentiful on that
auction site.
...Wayne
>
> Can someone who has both systems verify whether or not a 4/3 lens fits on
a
> m4/3 camera? I know it won't focus properly and maybe not even operate
> electrically. My only real concern is whether a 4/3 lens (or OM to 4/3
> adapter) physically fits into an m4/3 body.
>
> The reason I ask is that I was trying to use my OM bellows and slide
copier
> today to see if I could copy slides onto my E-M5. To do that I need a
> magnification of approx 0.5X. If I had a Zuiko 80/4 short mount macro
lens for
> the bellows I'd be OK. But my only two macro lenses are my 90/2.5 Viv S1
> and my 50/3.5 Zuiko.
>
> I don't think I can get the 90/2.5 to work at all since at 0.5X I think
the image
> of a slide is somewhere beyond the length of the bellows rail.
> The 50/3.5 macro is only designed to do about 0.68X on the bellows.
> The bellows itself prevents it from getting to 0.5X. The limitation is
imposed
> by the minimum separation of the lens board and camera mounting board.
> According to my possibly dodgy calculations the image plane needs to be
> brought forward about 14mm. If you were using an OM or 4/3 body that
> wouldn't be possible. However, I note that the 4/3 to OM adapter is about
> 20mm shorter than the m4/3 adapter. If I had a 4/3 adapter on the m4/3
> body I think that would give me the extra range I need to bring the image
> plane in and get the 50/3.5 to do 0.5X or slightly smaller.
>
> So, can someone answer the physical compatibility question between the
> two mounts, ie, will a 4/3 lens fit onto a m4/3 mount even though it might
> not actually work electrically and certainly can't focus even if it
physically fits?
>
> Assuming it does, anyone got a spare OM to 4/3 mount you'd like to move
> on? Maybe an old one with no AF confirmation chip? I won't be needing
> anything like that.
>
> Chuck Norcutt
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