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Re: [OM] Olympus Petition

Subject: Re: [OM] Olympus Petition
From: "Paul Farrar" <farrar@xxxxxxxxxxxx>
Date: Mon, 22 Jun 1998 10:38:54 -0500 (CDT)
> 
> Question: According to my OM System handbook, the 135 F/4.5 is "designed for 
> use
> with the bellows and auto-tube".  I assumed that the 135 (and 80 and 38 and 
> 20)
> were pure macro lenses and whould not focus to infinity.  Apparently this is 
> not
> the case. Question is what about the other 3 macros? Can they go to infin too?
> How is it done, I mean with or without bellows?
> 
> george
> 
> PS: I just tried with my 80 that I just received (Used, mint, MC) to focus to
> infin with and without the auto-tube and no can do.

The 20 and 38 are short focus lenses (Gauss) and can't get close enough 
to the film plane. The older ones in the screw mount might, if there were a
special adapter to hold them back inside the mirror box, and the mirror
were locked up, but the image circle probably would be too small.

The older 80mm will focus at infinity with about 35mm of extension, which
eliminates the auto tube. The newer one with the tube sticking out the 
back may not.

Paul Farrar

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