Vivitar 450/SLD 35MM SLR Student Camera With 3 Rolls of B&W FilmSystem features M42 lens mount with manual focus 50mm F 1. 8 prime lens (with manual and auto aperture). Uses mechanical metal shutter with speeds from 1 to 1 1000 of a sec and a B mode. Film of 25 to 3200 ASA ISO can be used. Spot light metering option selectable using the collar under the film rewind crank. Really good condition outfit mechanically with minor cosmetic wear and scratches. Light meter, shutter speeds and parts of regular use function