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2. Pentax K-mount - Wikipedia

   en.wikipedia.org/wiki/Pentax_K-mount

   The Pentax K-mount, sometimes referred to as the "PK-mount", is a bayonet lens mount standard for mounting interchangeable photographic lenses to 35 mm single-lens reflex (SLR) cameras. It was created by Pentax in 1975, [ 1 ] and has since been used by all Pentax 35 mm and digital SLRs and also the MILC Pentax K-01 .

3. Template:Pentax K-mount lens compatibility chart - Wikipedia

   en.wikipedia.org/wiki/Template:Pentax_K-mount...

   lens function compatibility Bayonet > K, M A F, FA, D-FA FA Powerzoom FA-J DA, DA-L DA-SDM, DA-DCM (KAF3) DA, D-FA (KAF4) Main changes: Camera First K-mount version A-position, electrical contacts Screw drive, with contacts for serial communication Two contacts for Powerzoom Aperture ring abandoned Small image circle In lens autofocus motor

4. Pentax (lens) - Wikipedia

   en.wikipedia.org/wiki/Pentax_(lens)

   All Pentax K-mount auto-focus cameras are backward compatible with K-mount lenses dating back as far as 1975 without need for an adapter. Cameras with a "crippled K-Mount" cannot read the set f-stop of K and M series lenses and must stop-down momentarily to meter in case the adjusted aperture is a stopped down one.

5. Template:Pentax K-mount lenses - Wikipedia

   en.wikipedia.org/wiki/Template:Pentax_K-mount_lenses

   This template is intended to contain an exhaustive list of Pentax K-mount lenses, in a manner similar to Template:Canon EF lenses.To ensure consistency in article names, the name "Pentax" is followed by the lens type (DA, D FA, FA, etc.), or K for the earliest K-mount lenses that are simply specified as "smc PENTAX", which is then followed by the focal length(s).

6. List of Pentax products - Wikipedia

   en.wikipedia.org/wiki/List_of_Pentax_products

   Asahi Pentax. Cameras using the M42 lens mount, also known as the Pentax screw mount. Asahi Pentax (1957) — also sold as the Tower 26; Asahi Pentax S (1958) — also sold as the Tower 26; Asahi Pentax K (1958) — also sold as the Tower 29; Asahi Pentax S2/H2 (1959) — also sold as the Honeywell Pentax H2/Honeywell Heiland Pentax H2

7. Pentax cameras - Wikipedia

   en.wikipedia.org/wiki/Pentax_cameras

   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]