Archived posting to the Leica Users Group, 2005/08/30

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Subject: [Leica] Hyperfocal Focusing
From: chs2018 at med.cornell.edu (Chris Saganich)
Date: Tue Aug 30 07:54:52 2005
References: <3.0.2.32.20050828184739.020876b8@pop.infionline.net> <410-220058028161847625@edge.net> <3.0.2.32.20050828184739.020876b8@pop.infionline.net> <3.0.2.32.20050829153143.006d7254@pop.infionline.net>

Thanks I didn't realize that was an inch to mm conversion, obviously 
correct, but the millimeters to meters doesn't seem right.  When I do the 
calculation I'm off by a place.  Isn't 1166 2/3 mm 1.166 meters rather then 
11.66 meters?
Chris


At 03:31 PM 8/29/2005, you wrote:
>At 12:03 PM 8/29/05 -0400, Chris Saganich wrote:
> >
> >Somewhere I think you mixed up cm and mm?  Perhaps circles of confusion
> >1/1000 is 0.0025mm or a factor of 400?
>
>Hmm.  I certainly am most capable of error as many others on the LUG will
>gladly tell you!
>
>But the calculator on my computer insists that 25.4 (the number of mm in an
>inch) divided by 1000 is 0.0254 which, when inverted, yields a
>multiplication factor of roughly 40 (39.37, to be precise).
>
>1/10 of 25.4 is 2.54.  1/100 is 0.254.  1/1000 is 0.0254.
>
>Marc
>
>
>
>msmall@aya.yale.edu
>Cha robh b?s fir gun ghr?s fir!
>
>NEW FAX NUMBER:  +540-343-8505
>
>
>
>
>
>_______________________________________________
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Chris Saganich, Sr. Physicist
Weill Medical College of Cornell University
New York Presbyterian Hospital

Ph. 212.746.6964
Fax. 212.746.4800
A0049  




Replies: Reply from msmall at aya.yale.edu (Marc James Small) ([Leica] Hyperfocal Focusing)
In reply to: Message from msmall at aya.yale.edu (Marc James Small) ([Leica] Hyperfocal Focusing)
Message from nicholsj at edge.net (Jim Nichols) ([Leica] RE: LUG: Hyperfocal Settings for Quick Shooting)
Message from msmall at infionline.net (Marc James Small) ([Leica] Hyperfocal Focusing)