Yes, I'm starting another enlarger lens thread

[Hilo]

Attached a datasheet from Olympus, from 1968, for the 38mm enlarging lens made for their half frame system. Saying the enlarging lens should have the same focal length as the taking lens. The most common standard lens for the Olympus Pen F was a 38mm.
Olympus was a great company, but what they say about losing quality I can't back up with my own experience.
For a long time I printed half frame negatives using a 50mm Leitz lens in the Focomat Ic. Single shots up to 40x50cm (16x20), diptychs and triptychs up to 50x60cm (20x24). Without any deterioration.
Then I found this 38mm, which is a fine lens, but its prints are not different in terms of deterioation from the prints done with the 50mm lens.

Ofcourse, setting up is easier because one does not have to go as high up the column when using the proper focal length.

 

[Sirius Glass]

Be sure to check as well that the lens plate you are using is the correct one for your turret and lens:
http://www.khbphotografix.com/omega/LensMountD5.htm

Thank you

 

[Sirius Glass]

Be sure to check as well that the lens plate you are using is the correct one for your turret and lens:
http://www.khbphotografix.com/omega/LensMountD5.htm

When I got back from Sacramento I went into my darkroom and started fiddling with the shim plates. I do not have a long enough knurled screw, but with a Phillips screw instead I added one more shim plate and now I have all three lenses on the turret for the first time! Thank you.

 

[MattKing]

When I got back from Sacramento I went into my darkroom and started fiddling with the shim plates. I do not have a long enough knurled screw, but with a Phillips screw instead I added one more shim plate and now I have all three lenses on the turret for the first time! Thank you.

You are welcome.
As you are probably aware, Omega actually made a number of different models of the knurled screws - I'm sure they even had their own part numbers!
I had a whole selection of them, that went with the enlarger.