Optima I is a 35mm film viewfinder camera made by Agfa and produced between 1960-64. It is simpler and cheaper version of Optima original.
Film speed (10-100 ASA) in model h1 and (10-200 ASA) in model h2 sets the shutter speed. Auto exposure control and manual settings for flash. Lens is Agfa Color-Agnar 45mm f/2.8 and the shutter is Prontor-Lux with speeds 1/30-1/500 + B.