Difference between revisions of "K mount lenses"
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− | The '''K mount''' was introduced by [[Pentax]] in 1975 of | + | The '''K mount''' was introduced by [[Pentax]] in 1975 with their line of [[Pentax K2|K series bodies]]. The K mount was initially a joint development betwee Pentax and Zeiss, that never materialized and in order to maintain compatibility, it was decided to retain the same flange/film distance as the [[M42]] screw mount lens mount (46.42mm). '''K-Mount''' was introduced as open standard, meaning that a handful camera makers soon offered SLR bodies and lenses 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---> [[DSLR]]s.<ref name="KPage">[http://kmp.pentaxians.eu/technology/k-mount/k/ Bojidar Dimitrov's Pentax K-Mount Page]</ref> |
+ | __TOC__ | ||
+ | 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. | ||
− | == Asahi - Pentax == | + | In 1983 Pentax introduced the [[Pentax Super A | 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 === | === Optimized for digital SLR === | ||
Line 15: | Line 22: | ||
* DA 35mm F2.8 Limited Macro | * DA 35mm F2.8 Limited Macro | ||
* DA 40mm F2.8 AL Limited | * DA 40mm F2.8 AL Limited | ||
+ | * DA 40mm F2.8 XS | ||
+ | * DA 50mm F1.8 | ||
* DA* 55mm F1.4 SDM | * DA* 55mm F1.4 SDM | ||
* DA 70mm F2.4 Limited | * DA 70mm F2.4 Limited | ||
* DA* 200mm F2.8 ED [IF] SDM | * DA* 200mm F2.8 ED [IF] SDM | ||
* DA* 300mm F4 ED [IF] SDM | * DA* 300mm F4 ED [IF] SDM | ||
+ | * DA 560mm F5.6 ED AW | ||
+ | <br> | ||
* DA 10-17mm F3.5 ED [IF] Fish-Eye | * DA 10-17mm F3.5 ED [IF] Fish-Eye | ||
+ | * DA* 11-18mm F2.8 | ||
* DA 12-24mm F4 ED AL [IF] | * DA 12-24mm F4 ED AL [IF] | ||
* DA 16-45mm F4 ED AL | * DA 16-45mm F4 ED AL | ||
* DA* 16-50mm F2.8 ED AL [IF] SDM | * DA* 16-50mm F2.8 ED AL [IF] SDM | ||
+ | * DA 16-85mm F3.5-5.6 ED DC WR | ||
* DA 17-70mm F4 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 | ||
* DA 18-55mm F3.5-5.6 AL II | * DA 18-55mm F3.5-5.6 AL II | ||
Line 29: | Line 43: | ||
* DA 18-135mm F3.5-5.6 ED [IF] DC WR | * DA 18-135mm F3.5-5.6 ED [IF] DC WR | ||
* DA 18-250mm F3.5-6.3 ED AL [IF] | * 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* 50-135mm F2.8 ED [IF] SDM | ||
* DA 50-200mm F4-5.6 ED | * DA 50-200mm F4-5.6 ED | ||
* DA 50-200mm F4-5.6 ED WR | * DA 50-200mm F4-5.6 ED WR | ||
* DA 55-300mm F4-5.8 ED | * 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 | * DA* 60-250mm F4.0 ED [IF] SDM | ||
|valign="top"| | |valign="top"| | ||
+ | |||
==== Pentax DA L Series ==== | ==== 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 | ||
+ | * 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 | ||
+ | * DA L 50-200mm F4-5.6 ED WR | ||
* DA L 55-300mm F4-5.8 ED | * DA L 55-300mm F4-5.8 ED | ||
<br> | <br> | ||
==== Pentax D FA Series ==== | ==== Pentax D FA Series ==== | ||
+ | * D FA* 50mm F1.4 SDM AW | ||
* D FA 50mm F2.8 Macro | * D FA 50mm F2.8 Macro | ||
+ | * D FA* 85mm F1.4 ED SDM AW | ||
* D FA 100mm F2.8 Macro | * D FA 100mm F2.8 Macro | ||
− | * D FA 100mm F2.8 Macro WR | + | * D FA 100mm F2.8 Macro WR |
+ | <br> | ||
+ | * 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 70-210 F4 ED SDM WR | ||
+ | * D FA 150-450mm F4.5-5.6 ED DC AW | ||
|} | |} | ||
<br> | <br> | ||
+ | |||
=== Optimized for film SLR (AF) === | === Optimized for film SLR (AF) === | ||
{|width=100% | {|width=100% | ||
Line 73: | Line 104: | ||
* FA* 400mm F5.6 ED [IF] | * FA* 400mm F5.6 ED [IF] | ||
* FA* 600mm F4 ED [IF] | * FA* 600mm F4 ED [IF] | ||
+ | <br> | ||
* FA 20-35mm F4 AL | * FA 20-35mm F4 AL | ||
* FA 24-90mm F3.5-4.5 AL [IF] | * FA 24-90mm F3.5-4.5 AL [IF] | ||
Line 108: | Line 140: | ||
* F* 300mm F4.5 ED [IF] | * F* 300mm F4.5 ED [IF] | ||
* F* 600mm F4 ED [IF] | * F* 600mm F4 ED [IF] | ||
+ | <br> | ||
* F 17-28mm F3.5-4.5 Fish-Eye | * F 17-28mm F3.5-4.5 Fish-Eye | ||
* F ZOOM 24-50mm F4 | * F ZOOM 24-50mm F4 | ||
Line 121: | Line 154: | ||
* F* 250-600mm F5.6 ED [IF] | * F* 250-600mm F5.6 ED [IF] | ||
<br> | <br> | ||
− | ==== Pentax-AF Series ==== | + | ==== Asahi Pentax-AF Series ==== |
* AF 35-70mm F2.8 (only on Pentax ME-F) | * AF 35-70mm F2.8 (only on Pentax ME-F) | ||
|} | |} | ||
<br> | <br> | ||
+ | |||
=== Optimized for film SLR (MF) === | === Optimized for film SLR (MF) === | ||
{|width=100% | {|width=100% | ||
Line 159: | Line 193: | ||
* A* 600mm F5.6 ED [IF] | * A* 600mm F5.6 ED [IF] | ||
* A* 1200mm F8 ED [IF] | * A* 1200mm F8 ED [IF] | ||
+ | <br> | ||
* A ZOOM 24-50mm F4 | * A ZOOM 24-50mm F4 | ||
* A ZOOM 28-80mm F3.5-4.5 | * A ZOOM 28-80mm F3.5-4.5 | ||
Line 172: | Line 207: | ||
* A ZOOM 80-200mm F4.7-5.6 | * A ZOOM 80-200mm F4.7-5.6 | ||
|valign="top"| | |valign="top"| | ||
+ | |||
+ | ==== 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 | ||
+ | <br> | ||
+ | * 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 | ||
+ | |valign="top"| | ||
+ | ==== 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 | ||
+ | <br> | ||
+ | * 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 | ||
+ | |} | ||
+ | <br> | ||
+ | |||
+ | {{Flickr_image | ||
+ | |image_source= http://www.flickr.com/photos/49656291@N00/4340380299/in/pool-camerawiki/ | ||
+ | |image= http://farm5.static.flickr.com/4048/4340380299_fde47192c4_m.jpg | ||
+ | |image_align= left | ||
+ | |image_text=SMC Pentax-A 28mm F2.8 | ||
+ | |image_by= Kenneth Dwain Harrelson | ||
+ | |image_rights= with permission | ||
+ | }} | ||
+ | <br clear="all"> | ||
+ | |||
+ | == Chinon lenses== | ||
+ | {|width=100% | ||
+ | ||- | ||
+ | |valign="top"| | ||
+ | * 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) | ||
+ | |valign="top"| | ||
+ | * 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 | ||
+ | |} | ||
+ | <br> | ||
+ | |||
+ | == Ricoh lenses== | ||
+ | {|width=100% | ||
+ | ||- | ||
+ | |valign="top"| | ||
+ | * 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) | ||
+ | |} | ||
+ | <br> | ||
+ | |||
+ | == Tamron lenses== | ||
+ | {|width=100% | ||
+ | ||- | ||
+ | |valign="top"| | ||
+ | * 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] | ||
+ | <br> | ||
+ | <br> | ||
+ | * 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 | ||
+ | |valign="top"| | ||
+ | * 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] | ||
+ | |} | ||
+ | <br> | ||
+ | |||
+ | == 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: == | == Brands of cameras with K mount: == | ||
+ | {|width=100% | ||
+ | ||- | ||
+ | |valign="top"| | ||
* [[Pentax]] | * [[Pentax]] | ||
* [[Ricoh]] | * [[Ricoh]] | ||
Line 184: | Line 444: | ||
* [[Sears]] | * [[Sears]] | ||
* [[Petri]] | * [[Petri]] | ||
+ | * [[Agfa_Selectronic|Agfa]] Selectronic series | ||
+ | |valign="top"| | ||
+ | * [[Best Products|Albinar]] | ||
* [[Topcon]] | * [[Topcon]] | ||
* [[Carena]] | * [[Carena]] | ||
Line 194: | Line 457: | ||
* [[Phenix]] | * [[Phenix]] | ||
* [[Nova]] | * [[Nova]] | ||
+ | |} | ||
+ | == Notes == | ||
+ | <references/> | ||
+ | |||
+ | == Links == | ||
+ | * [https://web.archive.org/web/20110209083201/http://www.pentaximaging.com/ Official Pentax Imaging Web Site] (including [https://web.archive.org/web/20101205132152/http://www.pentaximaging.com/camera-lenses/ lens product list (archived)]) | ||
+ | * [http://kmp.pentaxians.eu/technology/k-mount/k/ Bojidar Dimitrov's Pentax K-Mount Page] | ||
+ | * [http://www.pentaxforums.com/lensreviews/ Pentax Lens Reviews] at www.pentaxforums.com | ||
+ | * [http://en.wikipedia.org/wiki/Pentax_K-mount Pentax K-mount], comprehensive page at wikipedia | ||
+ | * [http://www.mosphotos.com/PentaxLensesExplained.html Pentax Lenses Explained] at http://www.mosphotos.com | ||
+ | <br> | ||
+ | In Spanish : | ||
+ | * [http://www.pentaxeros.com/index.php?pid=10# Base de datos de objetivos] at www.pentaxeros.com | ||
+ | <br> | ||
+ | In German: | ||
+ | * [https://web.archive.org/web/20160501130742/http://home.arcor.de/objektive/ Alle 35mm-Objektive] (archived) | ||
+ | * [https://olypedia.de/index.php?title=Pentax#Pentax-K-Bajonett K-bayonet] in [http://olypedia.de Olypedia] | ||
+ | * [http://www.yaaastark.de/pentax/pentax_objektivserien.htm Pentax Objektivserien] von Arnold Stark | ||
+ | <br> | ||
+ | In French: | ||
+ | * [https://web.archive.org/web/20150218175132/http://www.photopentax.com/compatibilite.html Base de données des objectifs à monture K] (archived) at PhotoPentax | ||
+ | [[Category: Japanese autofocus lenses]] | ||
[[Category: Lens mounts]] | [[Category: Lens mounts]] | ||
+ | [[Category: K mount|*]] |
Latest revision as of 06:10, 15 July 2022
The K mount was introduced by Pentax in 1975 with their line of K series bodies. The K mount was initially a joint development betwee Pentax and Zeiss, that never materialized and in order to maintain compatibility, it was decided to retain the same flange/film distance as the M42 screw mount lens mount (46.42mm). K-Mount was introduced as open standard, meaning that a handful camera makers soon offered SLR bodies and lenses 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 DSLRs.[1]
Contents
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
|
Pentax DA L Series
Pentax D FA Series
|
Optimized for film SLR (AF)
- |
Pentax-FA Series
|
Pentax-FA J Series
Pentax-F Series
Asahi Pentax-AF Series
|
Optimized for film SLR (MF)
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Asahi Pentax-A Series
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Asahi Pentax-M Series
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Asahi Pentax (K) Series
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SMC Pentax-A 28mm F2.8 image by Kenneth Dwain Harrelson (Image rights) |
Chinon lenses
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Ricoh lenses
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Tamron lenses
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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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Notes
Links
- Official Pentax Imaging Web Site (including lens product list (archived))
- Bojidar Dimitrov's Pentax K-Mount Page
- Pentax Lens Reviews at www.pentaxforums.com
- Pentax K-mount, comprehensive page at wikipedia
- Pentax Lenses Explained at http://www.mosphotos.com
In Spanish :
- Base de datos de objetivos at www.pentaxeros.com
In German:
- Alle 35mm-Objektive (archived)
- K-bayonet in Olypedia
- Pentax Objektivserien von Arnold Stark
In French:
- Base de données des objectifs à monture K (archived) at PhotoPentax