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. | 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. | ||
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* 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 18-50mm F4-5.6 DC WR RE | ||
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* D FA* 50mm F1.4 SDM AW | * 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 | ||
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* D FA 28-105mm F3.5-5.6 ED DC WR | * D FA 28-105mm F3.5-5.6 ED DC WR | ||
* D FA* 70-200mm F2.8 ED DC AW | * 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 | * D FA 150-450mm F4.5-5.6 ED DC AW | ||
|} | |} | ||
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* [[Sears]] | * [[Sears]] | ||
* [[Petri]] | * [[Petri]] | ||
+ | * [[Agfa_Selectronic|Agfa]] Selectronic series | ||
|valign="top"| | |valign="top"| | ||
* [[Best Products|Albinar]] | * [[Best Products|Albinar]] | ||
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* [[Nova]] | * [[Nova]] | ||
|} | |} | ||
+ | == Notes == | ||
+ | <references/> | ||
== Links == | == Links == | ||
− | * [http://www.pentaximaging.com/ Official Pentax Imaging Web Site] | + | * [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. | + | * [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://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://en.wikipedia.org/wiki/Pentax_K-mount Pentax K-mount], comprehensive page at wikipedia | ||
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<br> | <br> | ||
In German: | In German: | ||
− | * [http://home.arcor.de/objektive/ Alle 35mm-Objektive] | + | * [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 | * [http://www.yaaastark.de/pentax/pentax_objektivserien.htm Pentax Objektivserien] von Arnold Stark | ||
<br> | <br> | ||
In French: | In French: | ||
− | * [http://www.photopentax.com/compatibilite.html Base de données des objectifs à monture K] PhotoPentax | + | * [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: Japanese autofocus lenses]] | ||
[[Category: Lens mounts]] | [[Category: Lens mounts]] | ||
[[Category: K mount|*]] | [[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
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Pentax DA Series
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Pentax DA L Series
Pentax D FA Series
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Optimized for film SLR (AF)
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Pentax-FA Series
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Pentax-FA J Series
Pentax-F Series
Asahi Pentax-AF Series
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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:
- |
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