Archived posting to the Leica Users Group, 2001/06/11
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At 11:31 PM -0700 6/10/01, Frank Filippone wrote:
>Only at Infinity? That seems strange...... and seemingly unlike Tom...
>
>Tom... are you out there to respond? Feeling well enough to add fuel to
>this fire?
>
>Frank Filippone
>red735i@earthlink.net
>
>
>Tom's 21s only focus correctly through the rangefinder at infinity.
>
>John Collier
>
>> From: "Frank Filippone" <red735i@earthlink.net>
>>
>> Tom A has had the 21 SA modified.... that was the start of my rambling
> > thoughts.....
Just to let Tom have a bit of rest....
Yes, John is quite correct. If you think of what the focussing cam is
doing, you'll see that adding a magnifier to the windows will throw
off their proper focussing relationship. This isn't that much of a
problem with the SA, as DOF is usually quite enough. With the 35's,
things wouldn't be so good, especially at f/1.4.
- --
* Henning J. Wulff
/|\ Wulff Photography & Design
/###\ mailto:henningw@archiphoto.com
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