A pinhole camera by definition has no glass lens; instead, it uses a tiny hole in a flat plate of some sort to refract the image onto the film plane. Pictured here are views of a pinhole camera I recently put together. Camera body is from an Argus Model 21 Markfinder. The shutter was broken and I decided it was not worth fixing. The viewfinder optics were donated to another Argus user and replaced with portions of a finder from a dollar store camera, the shutter was secured in the open position, the lens removed, and the top release button converted mechanically to be a wind lock release only. Pinhole plate is pie tin material, the shutter assembly was a new old stock Wollensak Alphax, intended for a medium format application, and the lens shade was made from portions of a plastic film tub. The red front covering was cut from the cover of a day planner book. Pinhole is between 0.2 and 0.25 millimeter in diameter, and its focal length is 37 millimeters. I calculate the f: stop as approximately f:175. Camera has not yet been tested with film in its current configuration.