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Later models Spotmatic F, Electro Spotmatic, ES, and ESII were capable of open-aperture metering when used with Super Multi Coated (S-M-C) Takumar lenses with an aperture coupling prong in the lens mount. Honeywell was the U.S. importer of the Spotmatic. Cameras officially imported by Honeywell were labeled Honeywell Pentax, instead of Asahi ...
What set these cameras apart from earlier Pentax ones was the replacement of the M42 "universal" screw-lens mount with a proprietary bayonet mount system, known as the K mount. Still the basis for Pentax lenses and cameras today, the K mount offered greater convenience and enabled the production of faster lenses such as the 50 mm f /1.2. [17]
The bar on Pentax Spotmatic cameras is operated by spring pressure with timing linked to the shutter, but these cameras also had a separate switch for the light meter circuit which closed the aperture and gave the depth of field preview in this way. To allow auto lenses to be used on earlier cameras without the bar, many lenses were provided ...
3.1.12 Film era manual focus, auto aperture, prime lenses. ... Lenses for the Asahi Pentax and Pentax Spotmatic series cameras. Takumar 35 mm f/4.0 (1957)
The Pentax 6×7, designated product model number 400 xxxx by Asahi Pentax, is similar to any traditional 35 mm SLR camera except in size. The Pentax 6×7 is an electromechanical design and shares much in concept with its smaller 135 format cousin the "Pentax Electro Spotmatic", however, is not equipped with an internal meter.
Although the ME F was an interchangeable lens camera (the photographer could remove and exchange its lens for another), its AF function required the unique SMC Pentax AF 35 mm–70 mm f/2.8 Zoom Lens autofocus lens using a special Pentax K-F lens mount. Unlike all later Pentax AF SLRs, the ME F did not have the focusing drive motor and keying ...
The camera used Nikon 'S' type rangefinder lenses. [1] The Japanese company Pentax was the first manufacturer to show an early prototype 35 mm behind-the-lens metering SLR camera, which was named the Pentax Spotmatic. The camera was shown at the 1960 photokina show.
In addition to the 35mm line, Pentax added professional medium format 645 and 67 cameras lenses to its lineup. Pentax's digital interchangeable-lens camera bodies maintain compatibility with any Pentax K mount and even the M42 screwmount (with a Pentax adapter) ever made. 35mm and 645 lenses optimized for digital cameras are currently in ...