old lens on kx

pragund · 07-11-2010, 10:25 AM

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?

thanks
(My first post as a Pentaxian! =D)

dragonfly · 07-11-2010, 11:02 AM

It will work.

**boriscleto** · 07-11-2010, 11:18 AM

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.

Marc Sabatella · 07-11-2010, 11:19 AM

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.

pragund · 07-11-2010, 11:29 AM

Im loving the pentaxian community so far!
Thanks guys

Barnster · 07-12-2010, 01:21 AM

Originally posted by pragund

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.

07-11-2010, 10:25 AM	#1
pragund 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? thanks (My first post as a Pentaxian! =D)

07-11-2010, 11:29 AM	#5
pragund New Member Join Date: Jul 2010 Location: Melbourne Posts: 3 Original Poster	Thanks Im loving the pentaxian community so far! Thanks guys

07-12-2010, 01:21 AM	#6
Barnster Veteran Member Join Date: Jun 2009 Location: Mid North Coast,Australia Photos: Gallery Posts: 1,016	Originally posted by pragund 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.

07-11-2010, 11:02 AM	#2
dragonfly Veteran Member Join Date: Jun 2009 Location: on the wall Photos: Gallery Posts: 715	It will work.

07-11-2010, 11:18 AM	#3
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	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
Marc Sabatella Veteran Member Join Date: Sep 2006 Location: Denver, CO Photos: Gallery Posts: 10,685	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.