Archived posting to the Leica Users Group, 1997/12/19

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Subject: Re: [Leica] Darn it / Jim is now correct
From: Jim Brick <jim@brick.org>
Date: Fri, 19 Dec 1997 15:40:15 -0800

At 05:51 PM 12/19/97 -0500, you wrote:
>In a message dated 97-12-19 16:59:12 EST,  Jim wrote:
><< 
> But actually, what I really objected to, was that the opinion is that long
> lenses focus past infinity just because of the temperature drift. This is
> not true. They focus past infinity so that a photographer, knowing the
> proper focusing process, can indeed critically focus on very distant
> objects with those very long lenses.
> Jim
> =======================================================
> Darn it  -  I hate to agree with Jim, but in rephrasing his words, he is
now 
> absolutely correct; If I focus my 2000mm telescope on a distant star, our
> relatively close moon is also in focus - in order to obtain that plane I
have
> to yo-yo back & forth so there has to be space after the true infinty
>position.
>
> Marvin (yo-yo) Moss
>

Thank you Marvin,

Jim (worn out) Brick