Meyer Primotar 3.5/60 and Helioplan 4.5/105

[std]

Dear MFL Members,
I came across those 2 strange lenses.
I guess they are from some kind of projector but couldn't find anything on the net.
They both have apertures.

Primotar 3.5/60 Meyer-Optik Görlitz 1976145 1Q - aperture from f3.5 till f22
Helioplan 4.5/105 Meyer-Optik Görlitz 2511936 1Q - aperture from f4.5 till f22


Can someone tell me more.
Thanks

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[calvin83]

I have see them exist as bellow lens Click here to see on Ebay but these two looks a bit different.

[std]

Thanks Calvin,
this looks similar at least the aperture ring looks familiar.
I had a chance to try the small one mounted on VµFT - it renders very nice but certainly doesn't look very sharp to be a dedicated macro lens.
The big one i couldn't mount so i have sent it to a technician to make a mounting adapter and will see when i get it back.


Here you can see some samples with the Primotar:
https://www.flickr.com/photos/s_dyakov/sets/72157644352127339/

[calvin83]

No surprise that Tessar Type Primotar 60 may not be very sharp. From you samples, the sharpness is OK when you stop down it a bit.

I have a uncoated Helioplan 105mm F4.5. It is not sharp either but have very smooth bokeh and balanced color. Here is the old thread of mine.
http://forum.mflenses.com/meyer-goerlitz-dopple-anastigmat-helioplan-105mm-f4-5-t56650.html