Kollmorgen Movie Theater Projection Lens: This vintage 4.75 inch f.4 theater projection lens, is from the Snaplite Series II BX-163. It was made by Kollmorgen Optical Corporation in Brooklyn, NY, for Cine Theater Projectors. The glass is beautiful, without dings or dents, and clean and clear, free of scratches, fog, haze, or fungus, with no separation. A nice lens. Serial #3655L. I believe, but am not sure, that this lens can be adapted to fit on digital cameras, with the help of a camera repair technician.