I just bought an old opaque projector and I'm curious about this lens. It's 22" focal length, 4 1/2" dia x 6" long. It's a three element design. It cleaned up nicely, a little haze, but not much, only one small scratch, and a nice brass barrel. There are inner rings at 3 3/4" dia. which makes it about f5.8.
The engraving on the lens is: Charles Beseler Company Newark N.J. U.S.A 22"E.F.
I can't find what the E.F. stands for, or anything about the lens. Does anybody know of what effect I'll get with this lens mounted on an 8x10? I know, I should just try it out, but my shoulder is torn up and surgery is in two weeks, so I can't make a custom lens board (no retaining ring), or photograph right now.
8x10 coverage should not be a problem since the projector handles 11"x11" originals. Curiosity will inspire me to get a friend to help mount it and try it out soon. In the meantime, does anyone know about this lens?
btw, the projector is in great working shape. The bellows are tight and flexible, reflectors good, and the bulb & fan work great. All for only $20!