Archived posting to the Leica Users Group, 2000/08/23

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Subject: Re: [Leica] Lens test and the PLTC
From: Mark Rabiner <mark@rabiner.cncoffice.com>
Date: Wed, 23 Aug 2000 13:09:10 -0700
References: <000201c00d0c$1ed02520$922340c3@pbncomputer> <39A42924.EDB3F5A5@CameraQuest.com>

Stephen Gandy wrote:
> 
> Erwin Puts wrote:
> 
> > To 'test' lenses all stopped down to 5.6 and then shooting handheld, is not
> > the most meaningful act and conclusions based on these results are bound to
> > be valueless.
> 
> Valueless to who ?  Based upon what criteria ?  For What uses ?
> 
> The human tripod and the human focusing system are not the best or most precise,
> they vary from human to human example.   If someone wants to test their own
> lenses, to find out what their own lenses will do in the photog's personal
> shooting environment, its essential part of the test includes real world picture
> taking to introduce these added variables into the equation.   Some photogs are
> much steadier than others,  a variable which Published Lens Tests has no way to
> account for.
> 
><Snip> 
But then what are we testing the lens quality or ones ability to hand hold a camera.
I must have somewhat of a scientific mind because to me it is obvious that you
can't test two things simultaneously.
There are plenty of ways you can test your hand holding abilities and those
tests I have done and they are important with the results surprising. I don't
use a tripod in those tests!
But if i want to find out how good a lens is i use a tripod. It's just the lens
i want to be testing.
Markwr

In reply to: Message from "Erwin Puts" <imxputs@knoware.nl> ([Leica] Lens test)
Message from Stephen Gandy <Stephen@CameraQuest.com> (Re: [Leica] Lens test and the PLTC)