The Minolta Disc 5 and 7 were the first Minolta cameras that use the film disc launched by Kodak in 1982. They both have automatic exposure by Selenium cell, with automatic flash, advances automatic film, and are powered by a long life lithium batteries that at that time were replaced by the manufacturer but the internal OEM lithium batteries can be replaced with two common 123A batteries with a soldering iron and some difficulty (not worth it). The camera is provided with an f2.8 12.5mm lens, consisting of 4 elements in 4 groups. The optical glass is treated. The focusing is fixed to 1.2 meter to infinity, with a sliding lens position of closer focusing from 0.4 to 1.2 meter. The viewfinder has luminous framework with correction of parallax and indications of the symbols of focusing. The shutter speeds are 1/100 to 1/200 of a second and the aperture CDS controlled. The Disc 7 was introduced and sold by Minolta in 1983. The Disc 7 had one remarkable feature which stood it apart from other disc cameras. In the center of the front plate was a small convex mirror, which could be used by the photographer to compose a self-portrait. It also has a pivot arm with a carry strap hard point, shutter release socket, and a ¼” 20 thread tripod mount. The pivoting arm allows you to set the camera on a flat surface for a timed photo. The timer is set with a slide switch next to the mirror that has a LED that flashes when engaged. The camera retailed for $122.50 when new and you could buy an extender kit for $40.00 plus $10.00 for a case.