Archived posting to the Leica Users Group, 2003/07/31

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Subject: Re: [Leica] arggghhh... rant at Keeble & Shucat...
From: Eric Welch <>
Date: Thu, 31 Jul 2003 18:56:21 -0700

Doh! It just came back to me now why a rangefinder is more accurate 
with wider lenses!

I was right, but for the wrong reason. I've been arguing an old reason 
that an expert once told me was incorrect. I just forgot about that 

The REAL reason rangefinders are less accurate is that your eye Is less 
able to distinguish fine adjustment to focus with fast longer lenses. 
It's not the camera, it's US!

You're right, the rangefinder's accuracy doesn't change. Just our 
ability to distinguish accurate focus. The level of accuracy is more 
"adequate" with wider lenses. It's advantage becomes less with longer 
lenses. But it's our fault! The way the real world works, the effect is 
that we can focus better with a 35mm 1.4 lens.

I was wrong. I'm big enough to admit it. :-P

On Thursday, July 31, 2003, at 07:38  AM, Karen Nakamura wrote:

> Err... I don't see how the accuracy of the *RANGEFINDER* changes 
> because of the lens you put on it.

Eric Welch
Carlsbad, CA

Always drink upstream from the herd. - Will Rogers

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