Ricoh K system

Ricoh's 35mm SLR system based on the original Pentax K mount. The most advanced cameras of the system feature an electronically controlled shutter and aperture-priority auto exposure mode, while conventional models have a mechanical shutter and offer fully manual exposure mode. In order to implement shutter priority and program auto exposure modes, Ricoh had to modify the original mount and release a separate line of cameras and Rikenon P lenses.

NOTE:

• XR Rikenon prime lenses with focal lengths less than 28mm or more than 200mm were rebranded Sigma lenses,
• cameras introduced for this system in the 1990s-2000s were engineered and manufactured by Cosina,
• XR Rikenon prime lenses introduced in the 1990s were rebranded Cosina lenses,
• we removed Rikenon zoom lenses from the database.

• 35mm film SLR cameras with Pentax K mount (18):
  Ricoh XR-1 (1977) • Ricoh XR-2 (1977) • Ricoh XR500 (1978) • Ricoh XR-1S (1979) • Ricoh XR-2S (1979) • Ricoh KR-10SE (1980) • Ricoh XR5 (1980) • Ricoh KR-10 (1980) • Ricoh XR6 (1981) • Ricoh XR-S (1981) • Ricoh XR-2000 (1982) • Ricoh XR7 (1982) • Ricoh XR500 auto (1982) • Ricoh XR-F (1983) • Ricoh XR-8 (1993) • Ricoh XR-8 Super (1994) • Ricoh XR Solar (1994) • Ricoh KR-5 SV (2000)