Projection lenses are the hidden gems of bokehcentric photography. These are lenses used in movie and slide projectors. They are often quite fast, have no aperture, and are designed to be quite sharp in the center of the frame. Of course they have no focusing mechanisms and no mounting threads, and so they need to be adapted for shooting with digital cameras. They are usually quite cheap, and often produce splendid results. I will lump most of the ones I have here, and mention the lens name in captions.