Yashica - Mat
The Yashica twin-lens reflex cameras of 6 X 6 cm format were manufactured by the Yashica Company of Tokyo, Japan, during the period from about 1956 until the mid to late 1980's. They are all based on the design of the Rollei TLR cameras. The "Yashica" models resemble the Rolleicord in appearance, while the "Yashica-Mat" range incorporate many of the design features of the Rolleiflex. The Yashica-Mat first appeared in 1957 and remained in production until 1971 and included cameras with differing levels of specification. The following technical description relates only to the standard Yashica-Mat.
The Yashica-Mat is a twin-lens reflex camera, designed to take 12 exposures of 6 X 6 cm on 120 size film. It is a well constructed good quality camera for serious amateur photography and is especially suitable for pictorial work, views, portraiture, and feature photography. For focusing, the matched finder and taking lenses move forward in unison on a common panel actuated by a cam movement from the focusing knob. This is located on the side of the camera and carries a distance scale as well as a depth of field indicator engraved on the body panel.
The image is visible on a ground glass screen on the top of the camera. The screen, which is enclosed within a folding focusing hood, is evenly illuminated and incorporates gridlines as an aid to composition and camera alignment. There is no provision for parallax compensation. The centre panel of the hood can be folded down to convert it to a frame finder for eye-level use. A folding magnifying lens in the hood provides an enlarged view of the centre of the screen when required for specially precise focusing.
The film is wound by a crank on the side of the camera. After each frame has been advanced the transport movement is automatically locked until the shutter has been released. Frame counting is done automatically and the frame number is visible in a small window in the side of the camera. Opening and re-closing the camera back returns the film counter to 0. Film loading is semi-automatic; the backing paper being wound up on the take-up spool until a standard mark on the paper is in line with location points at the side of the picture aperture. On closing the camera and turning the transport crank the film is advanced until the transport mechanism locks. At this point the frame counter has automatically reached No. 1 (blocking the transport mechanism) and the first frame on the film is in position behind the lens.
The taking lens of the Yashica-Mat is a 8.0 cm Yashinon lens which is a 4 element triplet design. The maximum aperture is f3.5 and the angle of view is 52 degrees. The aperture is adjusted by means of a serrated wheel mounted on the lens panel to the left of the lens and the value selected is visible in a window above the finder lens. The lens can be focused in the range 3.5 feet to infinity.
The camera is fitted with a "between the lens" Copal MX shutter and is X M synchronised and includes a delay facility. The shutter has speed settings of 1, 1/2, 1/5, 1/10, 1/25, 1/50, 1/100, 1/250, 1/500 and B and it is tensioned by the action of the film transport crank and released by a button on the front panel. Shutter speed selection is made using a serrated wheel on the right side of the lens mount and the selected speed is visible in the same window which shows the chosen aperture.
The back of the camera is hinged at the top and a tripod bush is provided in the centre of the base.
The camera body is manufactured from die-cast alloy and covered with leather. Metal fittings are satin chromium plated.
The approximate dimensions (W x H x L) are 105 x 143 x 95 mm and it weighs 1077 g.