domaz
25-Jan-2010, 11:18
I found a magic lantern projector cheap enough at an Antique show this weekend that I bought it just for the lenses, hoping it was a petzval or something interesting. It's a B&L lens with a rack-and-pinion drive, just labeled 10 inch E.F. It comes apart easily and inside is three elements, two simple curved elements on the front and back and in the middle a element that's concave on both side. What kind of lens design is this? I'm assuming not a Petzval at this point, but it does seem to give some nice swirly bokeh anyways.