Difference between revisions of "K mount lenses"
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* [http://www.pentaximaging.com/ Official Pentax Imaging Web Site] <!--Commented out link, page no longer present/available, please remove if not returned by 03/2017 (including [http://www.pentaximaging.com/camera-lenses/ lens product list]) --> | * [http://www.pentaximaging.com/ Official Pentax Imaging Web Site] <!--Commented out link, page no longer present/available, please remove if not returned by 03/2017 (including [http://www.pentaximaging.com/camera-lenses/ lens product list]) --> | ||
* [http://kmp.bdimitrov.de/lenses/index.html Bojidar Dimitrov's Pentax K-Mount Page] | * [http://kmp.bdimitrov.de/lenses/index.html Bojidar Dimitrov's Pentax K-Mount Page] | ||
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* [http://www.photopentax.com/compatibilite-en.html Database of Pentax K-mount compatible lenses] at PhotoPentax.com | * [http://www.photopentax.com/compatibilite-en.html Database of Pentax K-mount compatible lenses] at PhotoPentax.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 |
Revision as of 05:16, 8 September 2016
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.
Contents
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:
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Links
- Official Pentax Imaging Web Site
- Bojidar Dimitrov's Pentax K-Mount Page
- Database of Pentax K-mount compatible lenses at PhotoPentax.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
- K-bayonet in Olypedia [1]
- Pentax Objektivserien von Arnold Stark
In French:
- Base de données des objectifs à monture K PhotoPentax.com