Archived posting to the Leica Users Group, 1999/03/13

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Subject: Re: [Leica] Re: Should len's infinity marking really be infinity?
From: Ben Ho ^_^ <longjohn@netvigator.com>
Date: Sat, 13 Mar 1999 16:44:55 +0800
 
Hello Jim,

Thanks for your explanations.  I feel much better now.  (Whew! I thought most of
my lens are mis-aligned to due improper storage, handling ...... )

Best regards
Ben


Jim Brick wrote:

> Many telephotos focus beyond infinity. This is normal. My 350 Telyt focuses
> WAY beyond infinity. This allows you to actually focus on far away objects
> without hitting the stop, making it difficult to "home" in on proper focus.
> Some lenses, with special glass, focus beyond infinity to take care of
> temperature differential. Infinity will be different, depending upon the
> temperature of the lens. Direct hot sun vs freezing blizzard, etc.
>
> Jim
>