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  2. Pentax Spotmatic - Wikipedia

    en.wikipedia.org/wiki/Pentax_Spotmatic

    The Pentax Spotmatic refers to a family of 35mm single-lens reflex cameras manufactured by the Asahi Optical Co. Ltd., later known as Pentax Corporation, between 1964 and 1976. All Pentax Spotmatics used the M42 screw-thread lens mount which was developed after World War II by Zeiss and Praktica. Asahi Optical used the name Takumar for their ...

  3. List of Pentax products - Wikipedia

    en.wikipedia.org/wiki/List_of_Pentax_products

    Asahi Pentax Spotmatic SP500 (1971) — also sold as the Honeywell Pentax Spotmatic SP500; Asahi Pentax Spotmatic II (1971) Honeywell Pentax Spotmatic IIa (1971) — USA only; Asahi Pentax Spotmatic Electro-Spotmatic (1971) — limited release Japan only; Asahi Pentax Spotmatic ES (1971) — also sold as the Honeywell Pentax Spotmatic ES; Asahi ...

  4. Pentax cameras - Wikipedia

    en.wikipedia.org/wiki/Pentax_cameras

    The Spotmatic was replaced by the Spotmatic II with many upgrades 1971 - 1976. Electro-Spotmatic with Super-Takumar 1:1.8 55mm lens. In 1966 Asahi Optical had produced one million SLR cameras since the first Asahiflex of 1962. It took them only another three years, until 1969, to reach two million.

  5. Pentax - Wikipedia

    en.wikipedia.org/wiki/Asahi_Optical_Corporation

    Pentax Corporation (ペンタックス株式会社, Pentakkusu Kabushiki gaisha) was a Japanese camera and optical equipment manufacturer. Currently, it exists as the Pentax Life Care Business Division of Hoya's medical endoscope business, as well as the digital camera brand of Ricoh Imaging, a subsidiary of Ricoh.

  6. Timeline of photography technology - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_photography...

    First Asahi Pentax SLR introduced. First digital computer acquisition of scanned photographs, by Russell Kirsch et al. at the U.S. National Bureau of Standards (now the NIST). [17] 1959 Nikon F introduced. AGFA introduces the first fully automatic camera, the Optima. 1963 – Kodak introduces the Instamatic. 1964 First Pentax Spotmatic SLR ...

  7. Through-the-lens metering - Wikipedia

    en.wikipedia.org/wiki/Through-the-lens_metering

    [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. The first TTL light metering SLR was the 1963 Topcon RE Super, which had the CdS metering cell placed behind the reflex mirror.

  8. M42 lens mount - Wikipedia

    en.wikipedia.org/wiki/M42_lens_mount

    It is more accurately known as the M42 × 1 mm standard, which means that it is a metric screw thread of 42 mm diameter and 1 mm thread pitch. (The M42 lens mount should not be confused with the T-mount , which shares the 42 mm throat diameter, but differs by having a 0.75 mm thread pitch.)

  9. Takumar - Wikipedia

    en.wikipedia.org/wiki/Takumar

    Takumar 1:3.5/200mm. Takumar is the name that Asahi Optical gave to its lenses, notably but not exclusively those for its own SLR cameras. Named after the Japanese-American portrait painter, Takuma Kajiwara (梶原啄磨, Kajiwara Takuma), [1] whose brother Kumao Kajiwara founded Asahi Optical. [2]

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