Author Topic: Projection lenses  (Read 148084 times)

Matthew Currie

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Re: Projection lenses
« Reply #435 on: January 10, 2021, 04:30:10 »
This is nice! What is the maximum aperture of that Wollensak?
It's 3.5.  Originally came, by the way, from a Revere projector with no magazines, and a different lens diameter from the Sawyer projectors I actually have the trays for, so no compunction about taking a hacksaw to the barrel.

Matthew Currie

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Re: Projection lenses
« Reply #436 on: January 11, 2021, 06:52:34 »
Rummaging in the commodious barns I find another, this a Bell and Howell 5 inch 2.8, from an odd combination 8mm and filmstrip projector I stored away but, since I haven't used it in over 30 years I figure it's safe to steal the lens.  This one goes in another scrap mount from a dead zoom,  and with a tiny bit of trimming will go to infinity, but since the sun rarely shines here in January I can't test for interesting outdoor highlights.  Here, however, is how it goes as a macro.  Focused on a rail, with a little contrast and sharpening in post, this one isn't likely to displace the micro Nikkors any time soon, but it might work for portraits.

Dr Klaus Schmitt

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Re: Projection lenses
« Reply #437 on: January 15, 2021, 16:35:34 »
Btw. has anyone seen or used the PRO-NIKKOR projection lenses yet?
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rosko

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Re: Projection lenses
« Reply #438 on: February 05, 2021, 16:49:50 »
I got recently the tiniest projection lens I have never held :

Carl Zeiss Jena Tessar 70mm f/3.5

Diameter :30mm;
lenght : 33mm;
Weight : 30 gr.  ???

In order to try it on my Z6, I had to machine a little adapter from acetal (POM) which is a very hard plastic stuff.

Francis Devrainne

rosko

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Re: Projection lenses
« Reply #439 on: February 05, 2021, 17:01:53 »
And few pictures :
Francis Devrainne

rosko

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Re: Projection lenses
« Reply #440 on: February 05, 2021, 17:04:41 »
One more :
Francis Devrainne

Dr Klaus Schmitt

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Re: Projection lenses
« Reply #441 on: February 25, 2021, 15:53:28 »
Angenieux f1.4/90mm projection lens does spring...





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golunvolo

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Re: Projection lenses
« Reply #442 on: February 25, 2021, 17:36:25 »
Beautiful. I especially like the use of the lens in the first image of the bunch.

 Thanks for sharing it!

Dr Klaus Schmitt

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Re: Projection lenses
« Reply #443 on: February 25, 2021, 21:47:18 »
Beautiful. I especially like the use of the lens in the first image of the bunch.

 Thanks for sharing it!

Thanks! Seems we have similar taste! ;-)
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rosko

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Re: Projection lenses
« Reply #444 on: February 26, 2021, 08:41:54 »
Beautiful. I especially like the use of the lens in the first image of the bunch.

I agree !

Interesting to see the difference of bokeh between image 1 and image 2.  :)

Matter of distance from the subject ? (could it be an iris in this projection lens ?)

Francis.
Francis Devrainne

Dr Klaus Schmitt

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Re: Projection lenses
« Reply #445 on: February 26, 2021, 17:40:50 »
I agree !

Interesting to see the difference of bokeh between image 1 and image 2.  :)

Matter of distance from the subject ? (could it be an iris in this projection lens ?)

Francis.

NO, there is no iris in this projection lens, hardly any such projection lenses exist with iris!
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ColinM

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Re: Projection lenses
« Reply #446 on: February 26, 2021, 22:13:45 »
Angenieux f1.4/90mm projection lens does spring...

Ahh, beautiful  Dr K

rosko

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Re: Projection lenses
« Reply #447 on: February 27, 2021, 01:12:34 »
NO, there is no iris in this projection lens, hardly any such projection lenses exist with iris!

Thanks for this info !
Francis Devrainne

Dr Klaus Schmitt

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Re: Projection lenses
« Reply #448 on: February 27, 2021, 21:01:48 »
Zeiss Ikon Ernostar f1.8 100mm





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John Geerts

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Re: Projection lenses
« Reply #449 on: February 28, 2021, 11:48:19 »
Angenieux f1.4/90mm projection lens does spring...
Lovely lens and examples. First one is most impressive.