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[OM] Re: Care of the 65-200 f/4, was: Buying a Tamron 80-200 f2.8

Subject: [OM] Re: Care of the 65-200 f/4, was: Buying a Tamron 80-200 f2.8
From: Manuel Viet <oly@xxxxxxxxxx>
Date: Tue, 22 May 2007 01:54:46 +0200
Le lundi 21 Mai 2007 10:50, Moose a écrit :
> Manuel Viet wrote:
> > .....
> > [*] side story : I made researches on DIY enlargers long ago, such as
> > they were made in the good ole'time to make use of the standard lense of
> > the camera to print the pictures ; the supposed benefit being to somehow
> > negate some distortions by printing out of the same lense that took the
> > image. I mostly came with a 'no can do' advice because the enlarger's
> > heat would liquify the internal lube of the lense.
>
> The more optically valid reason is that it's not the right kind of lens.
[...]

Yes, of course, you're right too. But I was younger in those days, and I have 
that perpetual  itch to build some contraptions out of pure interest, just to 
understand "how does it really works ?". The quality of the result matters 
less to me than cobbling together various pieces and finally get to a point 
where the underlying principles are exposed.

More than half my close relatives are teachers. While I'm not anymore involved 
into lecturing, I'm certainly infected by the disease, although to a lesser 
degree. I love to understand complex things, and sketch out the key points to 
others.

-- 
Manuel Viet

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