Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
07-11-2010, 10:25 AM   #1
New Member

Join Date: Jul 2010
Location: Melbourne
Posts: 3
old lens on kx

Does anyone know if the lens mount on kx is KAF2 normal or the crippled KAF2?
Is there any limitations of using a lens compatible with the KAF (not crippled) mount, which i think are the FA J, F, FA and D FA.
I wanna know if I would be able to use auto focus or not?

(My first post as a Pentaxian! =D)

07-11-2010, 11:02 AM   #2
Veteran Member

Join Date: Jun 2009
Location: on the wall
Photos: Gallery
Posts: 715
It will work.
07-11-2010, 11:18 AM   #3
Loyal Site Supporter
Loyal Site Supporter
boriscleto's Avatar

Join Date: Dec 2009
Location: North Syracuse, NY
Photos: Gallery
Posts: 15,975
There are no limitations for AF or A series lenses on the "Crippled" KAF2 mount. What makes it "Crippled" is that it has no mechanical linkage for the aperture so you have to use the Av +- button to meter when using K or M series lenses.
07-11-2010, 11:19 AM   #4
Veteran Member
Marc Sabatella's Avatar

Join Date: Sep 2006
Location: Denver, CO
Photos: Gallery
Posts: 10,686
The "crippling" has nothing to do with autofocus. If the lens is an autofocus lens - and all the ones you mention are autofocus - then it will autofocus on your camera.

The "crippled" nature of the mount has to do with using much older lenses - ones that are not only not autofocus, but also lack an "auto" position on their aperture rings to allow the camera to set the aperture (eg, M series lenses). these lenses can be used, but you have to follow the procedure described in the sticky thread at the top of this forum on how to use manual lenses.

07-11-2010, 11:29 AM   #5
New Member

Join Date: Jul 2010
Location: Melbourne
Posts: 3
Original Poster

Im loving the pentaxian community so far!
Thanks guys
07-12-2010, 01:21 AM   #6
Veteran Member
Barnster's Avatar

Join Date: Jun 2009
Location: Mid North Coast,Australia
Photos: Gallery
Posts: 1,014
QuoteOriginally posted by pragund Quote
Im loving the pentaxian community so far!
Thanks guys
That's great to hear!!!The great thing about Pentax lenses,is that they have backward compatibility with all Pentax digital SLR's.

  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, fa, kaf2, kx, lens, pentax help, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search

All times are GMT -7. The time now is 04:29 AM. | See also:, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]