K mount lenses

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The K mount was introduced by Pentax in 1975 of their K series bodies. It was used by other makers as well. It has the same flange/film distance as the M42 screw mount and was introduced as open standard, meaning that a handful camera makers soon offered variants of their SLR bodies with K-mount, for example Cosina, Chinon and Zenit. The mount standard has been revised and extended several times (e.g. to add autofocus) and remains in use on Pentax's 2015 DSLRs.

Viewing a K-mount lens from the rear (with the focus index mark at 12 o'clock), the aperture stop-down lever is at about 4 o'clock; and between 8 and 10 o'clock is a slider reflecting the current aperture-ring position, to allow for open-aperture light metering. These features are universal to all K-mount lenses. An autofocus KAF lens also adds a drive-screw slot at about 8 o'clock.

In 1983 Pentax introduced the Super Program (Super A), and with it a new series of Pentax-A lenses. These were a modification to the K mount allowing the camera body to set the aperture (e.g. for shutter-priority or programmed autoexposure); and accordingly these add a locking "A" position to the aperture ring. There are also a series of electrical contacts between 4 and 6 o'clock. These lenses remain well-supported by current Pentax DSLRs, i.e. allowing open-aperture metering and correctly recording the selected f/stop into an image's EXIF data.

Unfortunately this KA mount was not the same system chosen by Ricoh to add a P mode to their cameras and lenses. Ricoh-P-compatible lenses have a small protruding pin at about 7 o'clock. (Independent lens makers were able to create K-mount lenses which accommodated either Ricoh or Pentax camera bodies.) There is a serious hazard in attempting to mount any "Ricoh pin" lens on any autofocus K-mount body, as the pin can drop into the focus drive screw and become stuck.


Asahi - Pentax lenses

Optimized for digital SLR


Pentax DA Series

  • DA 14mm F2.8 ED [IF]
  • DA 15mm F4 AL Limited
  • DA 21mm F3.2 Limited
  • DA 35mm F2.4 AL
  • DA 35mm F2.8 Limited Macro
  • DA 40mm F2.8 AL Limited
  • DA 40mm F2.8 XS
  • DA 50mm F1.8
  • DA* 55mm F1.4 SDM
  • DA 70mm F2.4 Limited
  • DA* 200mm F2.8 ED [IF] SDM
  • DA* 300mm F4 ED [IF] SDM
  • DA 560mm F5.6 ED AW

  • DA 10-17mm F3.5 ED [IF] Fish-Eye
  • DA* 11-18mm F2.8
  • DA 12-24mm F4 ED AL [IF]
  • DA 16-45mm F4 ED AL
  • DA* 16-50mm F2.8 ED AL [IF] SDM
  • DA 17-70mm F4 AL [IF] SDM
  • DA 18-50mm F4-5.6 DC WR RE
  • DA 18-55mm F3.5-5.6 AL
  • DA 18-55mm F3.5-5.6 AL II
  • DA 18-55mm F3.5-5.6 AL WR
  • DA 18-135mm F3.5-5.6 ED [IF] DC WR
  • DA 18-250mm F3.5-6.3 ED AL [IF]
  • DA 18-270mm F3.5-6.3 ED SDM
  • DA 20-40mm F2.8-4 Limited DC WR
  • DA* 50-135mm F2.8 ED [IF] SDM
  • DA 50-200mm F4-5.6 ED
  • DA 50-200mm F4-5.6 ED WR
  • DA 55-300mm F4-5.8 ED
  • DA 55-300mm F4.5-6.3 ED PLM WR RE
  • DA* 60-250mm F4.0 ED [IF] SDM

Pentax DA L Series

  • DA L 18-50mm F4-5.6 DC WR RE
  • DA L 18-55mm F3.5-5.6 AL
  • DA L 18-55mm F3.5-5.6 AL WR
  • DA L 50-200mm F4-5.6 ED
  • DA L 50-200mm F4-5.6 ED WR
  • DA L 55-300mm F4-5.8 ED

Pentax D FA Series

  • D FA* 50mm F1.4 SDM AW
  • D FA 50mm F2.8 Macro
  • D FA 100mm F2.8 Macro
  • D FA 100mm F2.8 Macro WR

  • D FA 15-30mm F2.8 ED SDM WR
  • D FA 24-70mm F2.8 ED SDM WR
  • D FA 28-105mm F3.5-5.6 ED DC WR
  • D FA* 70-200mm F2.8 ED DC AW
  • D FA 150-450mm F4.5-5.6 ED DC AW

Optimized for film SLR (AF)


Pentax-FA Series

  • FA 20mm F2.8
  • FA* 24mm F2 AL [IF]
  • FA 28mm F2.8 AL
  • FA 28mm F2.8 Soft
  • FA 31mm F1.8 AL Limited
  • FA 35mm F2 AL
  • FA 43mm F1.9 Limited
  • FA 50mm F1.4
  • FA 50mm F1.7
  • FA 50mm F2.8 Macro
  • FA 77mm F1.8 Limited
  • FA* 85mm F1.4 [IF]
  • FA 85mm F2.8 Soft
  • FA 100mm F2.8 Macro
  • FA 100mm F3.5 Macro
  • FA 135mm F2.8 [IF]
  • FA* 200mm F2.8 ED [IF]
  • FA* 200mm F4 Macro ED [IF]
  • FA* 300mm F2.8 ED [IF]
  • FA* 300mm F4.5 ED [IF]
  • FA* 400mm F5.6 ED [IF]
  • FA* 600mm F4 ED [IF]

  • FA 20-35mm F4 AL
  • FA 24-90mm F3.5-4.5 AL [IF]
  • FA* 28-70mm F2.8 AL
  • FA 28-70mm F4 AL
  • FA 28-80mm F3.5-4.7
  • FA 28-80mm F3.5-5.6
  • FA 28-80mm F3.5-5.6 AL
  • FA 28-90mm F3.5-5.6
  • FA 28-105mm F4-5.6
  • FA 28-105mm F4-5.6 [IF]
  • FA 28-105mm F3.2-4.5 AL [IF]
  • FA 28-200mm F3.8-5.6 AL [IF]
  • FA 35-80mm F4-5.6
  • FA* 80-200mm F2.8 ED [IF]
  • FA 80-200mm F4.7-5.6
  • FA 80-320mm F4.5-5.6
  • FA 100-300mm F4.5-5.6
  • FA 100-300mm F4.7-5.8
  • FA* 250-600mm F5.6 ED [IF]

Pentax-FA J Series

  • FA J 18-35mm F4-5.6 AL
  • FA J 28-80mm F3.5-5.6 AL
  • FA J 75-300mm F4.5-5.8 AL

Pentax-F Series

  • F 28mm F2.8
  • F 50mm F1.4
  • F 50mm F1.7
  • F 50mm F2.8 Macro
  • F 85mm F2.8 Soft
  • F 100mm F2.8 Macro
  • F 135mm F2.8 [IF]
  • F* 300mm F4.5 ED [IF]
  • F* 600mm F4 ED [IF]

  • F 17-28mm F3.5-4.5 Fish-Eye
  • F ZOOM 24-50mm F4
  • F 28-80mm F3.5-4.5 Macro
  • F ZOOM 28-80mm F3.5-4.5
  • F ZOOM 35-70mm F3.5-4.5
  • F 35-80mm F4-5.6
  • F 35-105mm F4-5.6 Macro
  • F 35-135mm F3.5-4.5 Macro
  • F 70-210mm F4-5.6 ED
  • F 70-200mm F4-5.6
  • F 80-200mm F4.7-5.6
  • F* 250-600mm F5.6 ED [IF]

Asahi Pentax-AF Series

  • AF 35-70mm F2.8 (only on Pentax ME-F)

Optimized for film SLR (MF)


Asahi Pentax-A Series

  • A 15mm F3.5
  • A 16mm F2.8 Fish-Eye
  • A 20mm F2.8
  • A 24mm F2.8
  • A 28mm F2
  • A 28mm F2.8
  • A 35mm F2
  • A 35mm F2.8
  • A 50mm F1.2
  • A 50mm F1.2 Special
  • A 50mm F1.4
  • A 50mm F1.7
  • A 50mm F2
  • A 50mm F2.8 Macro
  • A* 85mm F1.4
  • A 100mm F2.8
  • A 100mm F2.8 Macro
  • A 100mm F4 Macro
  • A* 135mm F1.8
  • A 135mm F2.8
  • A* 200mm F2.8 ED
  • A 200mm F4
  • A* 200mm F4 Macro ED
  • A* 300mm F2.8 ED [IF]
  • A* 300mm F4
  • A* 400mm F2.8 ED [IF]
  • A 400mm F5.6
  • A* 600mm F5.6 ED [IF]
  • A* 1200mm F8 ED [IF]

  • A ZOOM 24-50mm F4
  • A ZOOM 28-80mm F3.5-4.5
  • A ZOOM 28-135mm F4
  • A ZOOM 35-70mm F3.5-4.5
  • A ZOOM 35-70mm F4
  • A ZOOM 35-80mm F4-5.6
  • A ZOOM 35-105mm F3.5
  • A ZOOM 35-135mm F3.5-4.5
  • A ZOOM 35-210mm F3.5-4.5
  • A ZOOM 70-210mm F4
  • A ZOOM 70-200mm F4
  • A ZOOM 80-200mm F4.7-5.6

Asahi Pentax-M Series

  • M 20mm F4
  • M 20mm F1.4 AL (Prototype)
  • M 28mm F2
  • M 28mm F2.8
  • M 28mm F3.5
  • M 35mm F1.4
  • M 35mm F2
  • M 35mm F2.8
  • M 40mm F2.8
  • M 50mm F1.4
  • M 50mm F1.7
  • M 50mm F2
  • M 50mm F4 Macro
  • M 85mm F2
  • M 100mm F2.8
  • M 100mm F4 Macro
  • M 120mm F2.8
  • M 135mm F3.5
  • M 150mm F3.5
  • M 200mm F4
  • M* 300mm F4
  • M 400mm F5.6
  • M 2000mm F13.5 Reflex

  • M ZOOM 24-35mm F3.5
  • M ZOOM 24-50mm F4
  • M ZOOM 28-50mm F3.5-4.5
  • M ZOOM 35-70mm F2.8-3.5
  • M ZOOM 40-80mm F2.8-4
  • M ZOOM 75-150mm F4
  • M ZOOM 80-200mm F4.5

Asahi Pentax (K) Series

  • 8.4mm F2.8 Fish-eye
  • 8.4mm F2.8 Bird's-eye (Prototype)
  • 15mm F3.5
  • 15mm F3.5 (AL)
  • 17mm F4 Fish-Eye
  • 18mm F2 ED (Prototype)
  • 18mm F3.5
  • 20mm F2 ED (Prototype)
  • 20mm F4
  • 24mm F2.8
  • 24mm F3.5
  • 28mm F2
  • 28mm F3.5
  • 28mm F3.5 Shift
  • 30mm F2.8
  • 35mm F2
  • 35mm F3.5
  • 50mm F1.2
  • 50mm F1.2 Gold
  • 50mm F1.2 VRL (Prototype)
  • 50mm F1.4
  • 50mm F4 Macro
  • 55mm F1.8
  • 55mm F2
  • 85mm F1.8
  • 85mm F2.2 Soft
  • 100mm F4 Bellows
  • 100mm F4 Macro
  • 105mm F2.8
  • 120mm F2.8
  • 135mm F2.5
  • 135mm F3.5
  • 150mm F4
  • 200mm F2.5
  • 200mm F4
  • 300mm F4
  • 300mm F2 (Prototype)
  • 400mm F5.6
  • 500mm F4.5
  • 1000mm F8
  • 1000mm F11 Reflex
  • 2000mm F13.5 Reflex

  • ZOOM 28-50mm F3.5-4.5
  • ZOOM 45-125mm F4
  • ZOOM 80-200mm F4.5
  • ZOOM 85-210mm F3.5
  • ZOOM 85-210mm F4.5
  • ZOOM 135-600mm F6.7
  • ZOOM 400-600mm F8-12 Reflex

Chinon lenses

  • 24mm F2.5
  • 28mm F2.8 Auto MC
  • Chinar 28mm F2.8 MC
  • 45mm F2.8 Auto
  • 50mm F1.4 Auto MC
  • 50mm F1.7 Auto
  • 50mm F1.9 Auto
  • 135mm F2.8 MC
  • 200mm F3.3
  • 200mm F3.5
  • 300mm F5.6
  • Makinon 500mm F8 (Mirror)
  • Zoom MC 28-50mm F3.5-4.5
  • Zoom 28-70mm F3.5-4.5
  • AF 28-70mm F3.5-4
  • Zoom 35-70mm F3.5-4.5 MC Macro
  • Zoom 35-70mm F2.7-3.5 Auto
  • Zoom 35-80mm F3.5-4.9 Auto MC
  • Chinar Zoom 35-70mm F3.5-4.5 MC
  • AF 70-210mm F4.5
  • Chinar Zoom 80-205mm F4.5
  • Chinar Zoom 85-210mm F4.5

Ricoh lenses

  • XR Rikenon Fish-eye 16 mm f/2.8 (8 groups/9 elements)
  • XR Rikenon 135 mm f/2.8 (4 groups/4 elements)
  • XR Rikenon 200 mm f/4 (5 groups/5 elements)
  • XR Rikenon 50 mm f/1.4 (6 groups/7 elements)
  • Rikenon P 50 mm f/1.7 (5 groups/6 elements)
  • Rikenon P 50 mm f/2 (5 groups/6 elements)
  • Rikenon P 28 mm f/2.8 (5 groups/5 elements)
  • Rikenon P Zoom 28-70 mm f/3.5–4.5 (8 groups/11 elements)
  • Rikenon P Zoom 28–105 mm f/3.5–4.5 (14 groups/14 elements)
  • Rikenon P Zoom 35–70 mm f/3.5–4.5 Macro (8 groups/8 elements)
  • Rikenon P Zoom 70–210 mm f/4–5.6 (8 groups/12 elements)
  • Rikenon P Zoom 60–300 mm f/4–5.6 (9 groups/13 elements)

Tamron lenses

  • SP AF 14mm F2.8 Asp. [IF]
  • SP AF 90mm F2.8 Di Macro 1:1
  • SP AF 90mm F2.5 Macro
  • SP AF 90mm F2,8 Macro 1:1
  • SP AF 90mm F2,8 Macro 1:1 II
  • SP AF 300mm F2,8 LD [IF]

  • SP AF 10-24mm F3.5-4.5 Di-II LD Asp. [IF]
  • SP AF 17-50mm F2.8 XR Di-II LD Asp. [IF]
  • SP AF 17-35mm F2.8-4 Di LD Asp. [IF]
  • AF 18-250mm F3.5-6.3 Di-II LD Asp. [IF] Macro
  • AF 18-200mm F3.5-6.3 XR Di-II LD Asp. [IF] Macro
  • SP AF 24-135mm F3.5-5.6 DC Asp. [IF] Macro
  • SP AF 28-75mm F2.8 XR Di LD Asp. [IF] Macro
  • AF 28-80mm F3.5-5.6 Asp.
  • AF 28-80mm F3.5-5.6 Asp. II
  • AF 28-105mm F4-5.6 [IF]
  • AF 28-105mm F4-5.6 Asp. [IF]
  • AF 28-200mm F3.8-5.6 Asp.
  • AF 28-200mm F3.8-5.6 LD Asp. [IF]
  • AF 28-200mm F3.8-5.6 LD Asp. [IF] II
  • AF 28-200mm F3.8-5.6 LD Asp. [IF] Super
  • AF 28-200mm F3.8-5.6 LD Asp. [IF] Super Macro-II
  • AF 28-200mm F3.8-5.6 Asp. XR [IF] Super-Zoom Macro
  • AF 28-200mm F3.8-5.6 Asp. XR [IF] Super Macro
  • AF 28-200mm F3.8-5.6 Di XR Asp. [IF] Macro
  • AF 28-300mm F3.5-6.3 LD Asp. [IF] Macro
  • AF 28-300mm F3.5-6.3 XR LD Asp. [IF] Ultra-Zoom Macro
  • AF 28-300mm F3.5-6.3 Di XR LD Asp. [IF] Macro
  • AF 35-90mm F4-5.6
  • SP AF 70-200mm F2.8 Di LD [IF] Macro
  • AF 70-300mm F4-5.6
  • AF 70-300mm F4-5.6 LD
  • AF 70-300mm F4-5.6 LD II
  • AF 70-300mm F4-5.6 LD Macro
  • AF 70-300mm F4-5.6 LD Macro 1:2
  • AF 70-300mm F4-5.6 Di LD Macro 1:2
  • AF 75-300mm F4-5.6 LD Macro 1:3.9
  • AF 80-210mm F4.5-5.6
  • AF 80-210mm F4.5-5.6 II
  • AF 90-300mm F4.5-5.6
  • AF 100-300mm F5-6.3
  • AF 100-300mm F5-6.3 Macro
  • AF 200-400mm F5,6 LD [IF]

Tokina lenses

  • SL 17mm F3.5
  • SL 17mm F3.5 N
  • AT-X 17mm F3.5
  • SL 24mm F2.8
  • SL 24mm F2.8 N
  • SL 28mm F2.8
  • SL 28mm F2.8 N
  • SL 35mm F2.8
  • 90mm F2.5 Macro
  • AT-X 90mm F2.5 Macro
  • EMZ 100mm F3.5 AF [IF] Macro
  • SL 135mm F2.8
  • SL 200mm F3.5
  • AT-X 300mm F2.8 SD
  • SL 300mm F5.6
  • SL 400mm F5.6
  • SL 400mm F5.6 N
  • AT-X 400mm F5.6 AF SD
  • TM 500mm F8 Mirror
  • Tele 600mm F8
  • Tele TXP 600mm F8

Brands of cameras with K mount:



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