Archived posting to the Leica Users Group, 1999/06/01

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Subject: RE: [Leica] What do you do with Leica Projectors
From: Alan Ball <AlanBall@csi.com>
Date: Tue, 1 Jun 1999 09:20:19 +0200

Lucian,

Thanks a million for your explanations. Seems reasonable to me. 
Unfortunately.

Regarding the pop v. tightening issue: I feel that 'popping' tightens the 
slide by adding that extra curvature....that is nicely managed by the CF 
Colorplan I have on the P600. My slides are sharp corner to corner only 
after the 'pop' occurs. Before the 'pop', I have to compromise and manually 
decide which part of the slide must be 100pct focused. Which is a really 
annoying process for the viewers...

Will think about trading in as soon as I can get my hands on a 2002 for 
trial (with my slides in my flat).

Thanks again,

Alan

On mardi 1 juin 1999 8:16, Lucian Chis [SMTP:chis@ece.orst.edu] wrote:
>
> Salut, Alan
>
> The P600 still relies on the HOPE that the low pressure, created by the
> expulsion of the hot air by the radial fan next to the lamp, will somehow
> draw cool air from outside in such a manner that it will cool the slide 
in
> the slide stage. strangely enough, the air has its own mind about this 
and
> it is drawn in also around the lens and it tends to shoot straight to the
> exit, without cooling both sides of the slide.
> The heavy ones (2000 series) have one radial fan blowing cool air from 
the
> outside (left side of the projector) directly onto the slide stage, to
> such an extent that both sides of the slide are cooled and you actually
> feel the breeze through the right side slide access door (They argue that
> that air also dusts off the slides around the position of the slide being
> projected, as well as warming them ever so slightly to where you have 
less
> humidity on the surfaces.
> On the tightening of the slides, I thought it went the other way ( I
> bought some trays for my RT300 and they were full with commercial slides
> of Greece and Turkey (what a combination!), but some of them were
> reversed. My CF Colorplan in that projector barked loudly at the idea:
> nothing except the center was in focus. So I think the curvature would be
> increased by popping. I am ready to hear any counterarguments to the
> matter.
>
> Lucian
>
> NO ARCHIVE
>
> PS Cheap doesn't mean inexpensive: you can buy used 2000 series
> projectors for less than new 600's . The older Colors can be had for
> $200-$300 and they still have these features, if a little less of a slide
> cooling stage (just an axial fan for that, while still having the radial
> fan for the hot air). A lot of people just don't know what they have!
> BTW, I think the P2002 at its present price of $600 + lens is cheaper 
than
> the 600, isn't it? You should find a P600 worshipper (for the infrared
> feature of course, and make him happy! Then go for a P2002, while they 
are
> selling at half price! But don't take my word for it: try it out first.