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RE: [OM] To infinity.. and beyond?

Subject: RE: [OM] To infinity.. and beyond?
From: "Timpe, Jim" <Jim.Timpe@xxxxxxxxx>
Date: Tue, 9 Apr 2002 08:49:17 -0700
Allowance for thermal expansion/contraction of the lens/innards etc., I
believe.

-----Original Message-----
From: Daniel J. Mitchell [mailto:DanielMitchell@xxxxxxxxxxxxx]
Sent: Tuesday, April 09, 2002 8:46 AM
To: 'olympus@xxxxxxxxxxxxxxx'
Subject: [OM] To infinity.. and beyond?


 Just collected an e*ay Tamron 500/8 SP mirror lens from the post office --
seems fine so far, though until I get stuff printed I'm not sure, of course.

 Question: it focuses fine all the way up to infinity -- but then it'll
focus a bit further. The focus scale on the lens makes it pretty clear that
this is deliberate -- there's a mark at infinity, and then the scale
continues a bit -- but why? What's the advantage of focussing further away
than infinity? 

 thanks,
 
 -- dan

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