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Navitar, Computar, Edmund?
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PostPosted: Thu Mar 26, 2009 10:13 pm    Post subject: Navitar, Computar, Edmund? Reply with quote

I was wondering if anyone had any experience with these companies lenses?

Do i run the risk of getting noticeably differing image qualities from mixing companies, like if i got a 25mm from navitar and a 50mm from edmund?


PostPosted: Thu Mar 26, 2009 10:26 pm    Post subject: Reply with quote

Hi,
Welcome.

Are this cine lenses?


PostPosted: Thu Mar 26, 2009 10:40 pm    Post subject: Reply with quote

No, not all of them.

Edmund? You mean Edmund Optics?

Glass types and coating may be (will be) different, so expect variations of course... Wink


PostPosted: Thu Mar 26, 2009 11:00 pm    Post subject: Reply with quote

Navitar was a brand used by Elgeet Co., a late member of the Rochester NY optical/photo industry cluster (Kodak, Wollensak, Graflex, Ilex, Bausch&Lomb, etc.)

Later a successor company to Elgeet adopted "Navitar" as the company name, much like Nippon Kogaku became Nikon.

Elgeet/Navitar avoided the small-format still-camera market, but produced pretty much everything else, cine lenses, large format, portrait-camera, projection, military optics, etc.

I have an absolutely lovely 10"(250mm)/4.5 Elgeet Navitar that seems to have come out of a Beattie-Coleman portrait camera. I mounted it on bellows.

http://forum.mflenses.com/elgeet-navitar-10-4-5-on-exakta-bellows-t7500,highlight,elgeet+navitar.html


PostPosted: Thu Mar 26, 2009 11:34 pm    Post subject: Reply with quote

They're not cine lenses per say, they're megapixel c-mounts meant for machine vision cameras, like the SI-2k and Scarlet, although there are many different production quality MVC's out there besides those two.

yes, edmund as in edmund optics.


PostPosted: Thu Mar 26, 2009 11:56 pm    Post subject: C-mount lenses for machine vision Reply with quote

some cover 1" CCD, enough for crop sensor, not enough for ff; depending on lens (and cost) might only cover 1/3" CCD; okay for macro with bellows/extension tubes, but infinity circle too small.

in terms of quality, based on current offerings, Edmund can be far-ahead first, then Navitar, then Computar. Navitar & Computar produce lenses for the security ccd cameras; Edmund produce machine-vision lenses, for scientific purposes.

each company has website, with lens specs, etc..