Archived posting to the Leica Users Group, 2000/11/08

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Subject: [Leica] Focus Mark for Infrared Film.
From: Peter Zak <pzak@desidero.com.au>
Date: Wed, 08 Nov 2000 21:58:28 +1100
 
I know that the focus point for the use of IR film has to be changed - I
don't see any such marks of any of my Leica lenses (35, 50, 90 Summicrons).

Is there a reason for this, what is a rule of thumb that could be used ?

Regards,

Peter Zak.