Minolta 16 Model P Vintage Subminiature Camera with Minolta Duofit S flash. (1960-1965) -- 25mm (f3.5-16). A simplified model that sold very well since it was inexpensive and easy to use. There were several features (or lack thereof) that made the camera inexpensive. First, it had just one shutter speed (1/100) -- exposure is completely controlled by the aperture. The camera did come with a clever, manual exposure system, however. To use, the film speed was dialed in (ASA 10 - 160). Then the photographer rotated the f-stop dial to match up the appropriate idiot-weather symbol (or f-stop). A mini-exposure guide was etched on the back of the camera for quick reference. The second design feature to reduce cost was that the body was rigid and did not collapse. As a result, it was larger than the previous models -- the push-pull film advance feature was replaced with a thumb wheel. Fortunately, the three element lens was good quality. It's a great camera for scenics and group shots, and much sharper than you would expect -- when used in this capacity. Built-in PC contact and tripod socket. Combination flash bracket/tripod adapter was available. Although the lens was fixed-focus at 16 feet , it's depth-of-field was adequate and controllable with the aperture and auxilliary lens selection. Two close-up lenses were made. The #1 was for focusing at about 4 feet, while the #2 was aimed at 2.5 feet. Filters included a UV, Y48 (yellow), 80A, 81B, ND (4x) and 1A. The filters used a bayonet system and were rotated, or twisted, into place.
Taken from http://www.subclub.org/shop/minolta.htm