At 09:29 6/11/02, you wrote:
I have a Vivitar projector that I bought for about $ 170, with a Vivitar
85/2.8 lens. The performance is
adequate. How do you think the Schneider-Kreuznach Vario-Prolux f/2.8 zoom
would compare to it,
and if it were compatible would it be worth the 'upgrade' ?
-Tim
Tim,
I have no experience with the Vivitar lens . . . only a comparison of the
Schneider with two Kodak lenses on an Ektagraphic II, and a Rollei lens on
a dual format Rollei P11. The Schneider and Rollei lenses clearly have
higher resolution with less aberration than Kodak's lenses, and the
Schneider lens edges out the Rollei lens, but not by much. I'd be willing
to bet the Schneider lens would also edge out the
Vivitar. Schneider-Kreuznach's current "claim to fame" is cinema and
projection lenses, along with world class medium format lenses. They're on
par with Carl Zeiss, and have been for many years. They don't have the
name recognition that Carl Zeiss does.
If Kodak's Carousel lenses are compatible with the Vivitar projector you
have, then the Schneider Vario-Prolux will work in it. I don't know if
they're interchangeable. Find a Carousel or Ektagraphic projector
somewhere (or even go to an Office-Max or Staples . . . they carry
Ektagraphic III's). Compare the Kodak lens to your Vivitar lens.
BTW, I found out about the Vario-Prolux reading Photo.net's forum on
projection systems and methods. Quite a few postings there about it. Only
complaint by a few is the plastic barrel, which is still very precision and
better than Kodak's plastic barrels. They come from a few
commercial/industrial users that desire/expect metal barreled projection
lenses so they can withstand the beating they'll receive.
-- John
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