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[OM] Re: Bellows usage

Subject: [OM] Re: Bellows usage
From: biesele@xxxxxxxxxxxx
Date: Fri, 1 Dec 2000 13:08:19 -0700 (MST)
> >Firstly, in a book I have which was written by 
Pangerl (it's a 1982 Dutch
> >translation of a book based on The world of OM 
systems, and on a book about
> >the OM-10), in the section about copying slides it 
is deliberately mentioned
> >that "the lens" (Pangerl discusses the usage of the 
80/4, the 50/3.5 and
> >normal 50mm lenses) should be set to infinity. In 
fact, he even added an
> >exclamation mark to that statement, which indicates 
to me that this is
> >probably not a misprint, but a well considered 
remark. Now, from what I've
> >gathered, the 50/3.5's close up aberration control 
group only kicks in when
> >the lens is set to the closest focus. IOW, when the 
lens is set to infinity,
> >as should be done according to Pangerl, this group 
will not kick in. Now the
> >question is: which setting should I really set the 
50/3.5 at for best
> >results?

Many of the Olympus fact sheets for the bellows and 
extension tubes specify lens focus at infinity.

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