Archived posting to the Leica Users Group, 2009/03/05

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Subject: [Leica] potential focus issues
From: imagist3 at mac.com (George Lottermoser)
Date: Thu, 05 Mar 2009 11:19:50 -0600
References: <DF43398C-52A9-4975-AEE7-F6B70980176A@reid.org>

Ruff test:
Lock it down on a tripod.
Pick the center focus spot.
Focus on 18" on a yard stick at 45?
This should indicate whether the lens is back focusing, front  
focusing or dead on.

Once you know that - more discussion can follow.

Regards,
George Lottermoser
george at imagist.com
http://www.imagist.com
http://www.imagist.com/blog
http://www.linkedin.com/in/imagist

On Mar 5, 2009, at 11:15 AM, Elizabeth Reid wrote:

> The Barkeep bought me a wonderful new lens for Christmas this year,  
> the Canon EF 24-70 f/2.8. I've been playing with it in the  
> intervening time, although not as much as I would like to (I'm  
> currently somewhat busy dealing with wrapping up my thesis, and  
> other scholarly endeavors). However, when I do use it I seem to be  
> having some trouble getting my camera to focus properly (I'm using  
> a Canon 30D). I'm not entirely sure that it isn't in my head, but I  
> don't think it is. Do any of you knowledgeable folk have any advice  
> for me about:
>
> 1. How to test the focusing mechanism in a way that will make it  
> clear whether the fault is the camera/lens combo, or if I'm doing  
> something wrong, or even just imagining it.
>
> 2. If it is the camera/lens combo, what might I do to fix it (or  
> even what is causing it).
>
> thanks!
> Elizabeth
>
> _______________________________________________
> Leica Users Group.
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Replies: Reply from leicachris at worldnet.att.net (Chris Williams) ([Leica] potential focus issues)
In reply to: Message from elizabeth at reid.org (Elizabeth Reid) ([Leica] potential focus issues)