I have a small lens I'm trying to find out something about but the general web info doesn't describe it close enough. It's marked Dallmeyer England and f/1.5. The iris closes to f/22, I think... I'll have to look at it again. The threaded rear is about 25mm across... My guess it's an old 16mm lens. Anyone know something about these?
The rear thread is the so-called C(iné) Mount. It’s a one-inch, 32 threads-per-inch, affair. Introduced for 16-mm. film motion-picture cameras with the flange focal length of 0.69" (distance flange face to film).
Your Dallmeyer is a Kino-Plasmat type lens, i. e. six lenses in four groups (2-1-1-2).
I’d like to see a picture of and from the lens.
So long, S.