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Re: [OM] Focal Length Shift Due to Floating Elements?

Subject: Re: [OM] Focal Length Shift Due to Floating Elements?
From: *- DORIS FANG -* <sfsttj@xxxxxxxxxxxxxxxxxxx>
Date: Fri, 8 Jan 1999 20:19:35 -0500 (EST)

On Fri, 8 Jan 1999 PCACala@xxxxxxx wrote:

> ALEXSCIFI writes:
> > Someone posted an email recently that stated the 50F2.0 Zuiko macro had a
> >  focal length of 40mm at it's closest focusing point
> 
> That was me, based on a Popolar Photography lens test.  They either didn't
> test the others, or they didn't test at close focusing distance.  To the best
> of my knowledge, that information has never been published.  If someone knows
> how to calculate it, it would make a great trivia question down the road!

  I don't know how to calculate it, but I believe the Leica manual
mentions that focal length changes slightly with focusing distance.

                                    *= Doris Fang =*


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