Yashica Half 17

The Half 17 is a half-frame 35 mm viewfinder camera made by Yashica in about 1964.[1] It has a six-element 32 mm f/1.7 Yashinon lens (a wide maximum aperture for a popular camera of the time) and a Copal BR shutter. There is a selenium meter, with the cell arranged around the lens, and the camera is normally used with automatic exposure, which follows a program between 1/30 second at f/1.7 (EV 6½) and 1/800 second at f/16 (EV 17½). The metered shutter speed (but not the aperture) is displayed in