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04-15-2020, 10:14 AM - 2 Likes   #451
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Same Aldis Star 100/2.8 wide open but on the K-1 here ... post in Darkroom 3. More quick shots from our backyard while we are all confined to the house.






04-16-2020, 07:10 AM - 1 Like   #452
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Hi again.

Check out this YouTube video at about the 2 and a half minute mark ... the projector lens makes a pretty good showing against the Meyer Optik Trioplan 100/2.8 II ... Fun with Bokeh! Visual experiments you can do at home - YouTube

Entire video ⇒
04-19-2020, 09:45 AM - 2 Likes   #453
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Got bored this afternoon, so I climbed up into the attic to fetch a few photo things ... some 16mm cinema projection lenses.

Here, first efforts with an Angénieux F50 1:1.5 mounted in a cheap Chinese extension tube rig on the X-E1 ... not perfect yet, but functional.

B&W post in Darktable 3 ... and the color image is SOOC.
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05-18-2020, 01:06 PM - 7 Likes   #454
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K-1 + Leica Colorplan-P 90/2.5 slide projection lens mounted in a Russian macro bellows ... bees in my backyard early this evening










Last edited by Jean Poitiers; 05-19-2020 at 03:36 AM.
05-20-2020, 11:21 AM   #455
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QuoteOriginally posted by Jean Poitiers Quote
K-1 + Leica Colorplan-P 90/2.5 slide projection lens mounted in a Russian macro bellows ... bees in my backyard early this evening







Amazing work!!!
06-11-2020, 05:04 PM - 8 Likes   #456
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Admiring the giant ...

... 2.5mm long ant. A matter of perspective.

Raynox 250 hand-held in front of a beaten Diaplan 100mm f/2.8 hand-held in front of an 8mm hole in roll film backing paper as aperture in front of fully extended K-Bellows and small extension tube for a 3:1 magnification, cropped to ~5mm field of view.
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06-18-2020, 10:24 AM - 2 Likes   #457
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New projector lens. Kindermann Color-Germany 90mm 1:2.8 MC. Seems less soft than my other one.
07-07-2020, 08:28 AM   #458
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Has anyone here adapted the Ko-120m to a Pentax?
I'm having trouble finding out the exact lens flange distance at infinity. It looks to be about 47.5mm, which would be quite tight (though I could shorten the lens slightly).

If anyone happens to have measured it at some point I'd be very happy to know!

07-10-2020, 02:20 PM - 1 Like   #459
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QuoteOriginally posted by Topsy Quote
Has anyone here adapted the Ko-120m to a Pentax?
I'm having trouble finding out the exact lens flange distance at infinity. It looks to be about 47.5mm, which would be quite tight (though I could shorten the lens slightly).

If anyone happens to have measured it at some point I'd be very happy to know!
It can be done. I've never measured the distance but I have had to shorten the lens from the back side a little bit. I've unscrewed the back of the lens, took out the lens and filed until it worked. for focussing, I've used the big 55mm chinese helicoid and for fixing the lens an old Carl zeiss 52.5mm ring epoxied to the front of the helicoid.

I could add a picture or two of the contraption soon if it would be helpful.
07-10-2020, 05:43 PM   #460
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Thanks a lot!
I'd be very happy to see some photos.
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