On Mon, 29 Nov 2004, Winsor Crosby wrote:
>
> If I can add my two cents. A couple of years ago when this discussion
> was going hot and heavy Gary Reese produced a test slide for a slide
> projector. I was quite disappointed in the performance of my Leitz
> projector with the Colorplan 90 flat field lens. I remounted the slide
> in a glass slide mount and found that I could determine no difference
> in performance.
Way back then I did some tests of various Leitz/Leica lenses using Gary's
slide. Here are the results I got:
centre corner
90mm Super Colorplan 2.2 (90.2 lp/mm) 1.8 (73.8 lp/mm)
90mm Colorplan (old) 2.2 (90.2 lp/mm) 1.4 (57.4 lp/mm)
80mm Hector 1.6 (65.6 lp/mm) 1.0 (41.0 lp/mm)
The Colorplan was the older first generation one, not the current generation.
What I found made the most difference was the projector, not the lens. There's
a world of difference when viewing a slide projected by a P2002 vs a P150,
even though they may both have a Super Colorplan lens mounted. The P2002
provides a far more pleasing and balanced image. The projector is much more
than just a source of light.
-mark
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