About a year ago I purchased an Argus C3 on ebay. The C3 is a very old camera that was manufactured from 1939 to 1966. I have spent the last year working on and off with it, trying to get it in usable condition. I completely took apart the camera and cleaned every screw and spring. The C3 is actually a very simple camera. My camera came with a 50 mm f3.5 lens, although there are other lenses are available for the camera. It has a variable shutter from 1/300 to 1/10 of a second, thou I’m not sure how completely accurate the shutter settings are, even after servicing it. The camera does not have a through the lens viewfinder. Instead it has two viewfinders. One paralax viewfinder that allows for composition, and one split screen viewfinder for focusing the lens through a pair of gears that moves the lens when adjusted. This I had to calibrate to make sure focus was sharp. I had to measure out the distance from the lens to a subject, set the lens to that distance, then adjust the mirrors in the focusing viewfinder so that the image was lined up. The C3 has a wind that cocks the shutter for the next exposure, and two separate knobs that allow you to advance the film. Because the shutter and film advancement are not ready-ed with the cocking of one lever like they are on all modern SLRs, the C3 makes it very easy to accidentally do a double exposure. I hand developed the role with Illford chemicals, and scanned them using my Canon CanoScan D1250U2F.