Non kodak projector lenses

I have been reading about other manufacturers lenses for ektagraphic projectors, like schneider, buhl, navitar etc. I am under the impression that f 2.8 lenses are sharper than the 3.5s. Am I just reading the wrong stuff on line or am I confusing cost with quality? Any experience would be appreciated. Thanks Norm

Normo said:

I am under the impression that f 2.8 lenses are sharper than the 3.5s.

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If it is the same focal length then generally that seems true. I don't think there is a physics reason behind it. I think it is the same as camera lenses. Faster (brighter) lenses are usually part of camera companies premium lines and are better engineered. Anyway why don't you try Kodak's Ektapro Select line of lenses. I own one and it's really nice. Those things were really expensive back in the day but can be had for less than $50 if you are patient. I have not done any scientific head to head lens comparisons. I just bought Ektapro Select and stopped worrying about it. I actually have a few other lenses in different focal lengths from other manufactures. I researched them at the time and they seemed to get good reviews too. Can't remember the names of them.

Do the ektapro select line fit the ektagraphic line of projectors? Thank you, BTW. Norm

Normo said:

Do the ektapro select line fit the ektagraphic line of projectors? Thank you, BTW. Norm

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Yes - see page 28 or so of this pdf: Dead Link Removed

Thank you. Norm