Archived posting to the Leica Users Group, 2002/03/27

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Subject: [Leica] RE: [MUGers] Focus Distance
From: Henry Ting <henryting10@yahoo.com>
Date: Wed, 27 Mar 2002 08:45:16 -0800 (PST)

Hey Frank, ever since we met at the Chinatown outing,
the magnifier you have attached to my .85 M, with my
90 Cron, left quite an impression on me. I made up my
mind to get one, but so far I just cannot find it
anywhere. Also can you give me the name/address of the
source of your M-grip? Again, the best grip I've ever
seen.

- --- Frank Filippone <red735i@earthlink.net> wrote:
> Carl... the "average" Leica M lens is about 1-2
> inches long, and the film
> plane is 28.8 mm (1 inch) back.. so the difference
> is about 2-3 inches......
> In terms of what you are trying to measure, what is
> the difference in
> application?  Seems pretty small to me.. is this
> about precise reproduction
> ratios for close ups?
> 
> I don't think you are expecting to check distance or
> overall  focus using
> this method?  The best way to do that is to shoot a
> roll of B+W negs forum a
> tripod, repeatedly focusing on the same distance and
> looking at the negs for
> sharpness.
> 
> Frank Filippone
> red735i@earthlink.net
> 
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