Not sure what I lose with the K Mount

justtakingpics · 05-01-2010, 05:49 PM

I was looking at variou lens on ebay and found on Pentax K mount. I looked in the manual for the k-x and found:

It has in the far right column "MP" and then "K" and then under the programs:

Av(AperturePriority)AutomaticExposure with the aperture open.(Adjusting the aperture ring has no effect on the actual aperture value.)

Does that mean it will control the aperture or that I have to? Also, does that K mean K-mount while the others are Ka-Mount, Kaf-Mount, etc.? I know it won't be autofocus but would have liked aperture to be controlled.

edit: i found the answer. I tried to delete this but there is no delete. sorry.

ripit · 05-01-2010, 07:46 PM

I'm still trying to learn the various mounts myself. Since no one has responded yet though, perhaps some of these links will help.

Pentax K mount - Wikipedia, the free encyclopedia

Pentax Lens/Camera Compatibility - Mark Roberts Photography

There is a really good link that shows pics of each mount and explains them but I cannot find it now (I think I have it somewhere in my mess of hundreds of book marks). If I find it I'll post it if I can unless someone beats me to it.

I'm a noob but hopefully that will help a little.

Marc Sabatella · 05-01-2010, 07:52 PM

Glad you found the answer, but since this a common point of confusion:

First, *all* lenses that you will be using a K mount. That's the generic terms for every lens intended to mount to your camera. So just because a lens says K-mount, that doens't mean there is anything at all you "lose".

But it is true that technically speaking, there are different "flavors" of K-mount: the original K, KA, KAF, KAF2, etc. See Welcome to Bojidar Dimitrov's Pentax K-Mount Page for tons more info. Also see the sticky thread at the top of the beginner's forum on how to use manual lenses - this is specific there to show you how to use the original K mount lenses (no "A" or "F").

05-01-2010, 05:49 PM	#1
justtakingpics Senior Member Join Date: Apr 2010 Posts: 288	Not sure what I lose with the K Mount I was looking at variou lens on ebay and found on Pentax K mount. I looked in the manual for the k-x and found: It has in the far right column "MP" and then "K" and then under the programs: Av(AperturePriority)AutomaticExposure with the aperture open.(Adjusting the aperture ring has no effect on the actual aperture value.) Does that mean it will control the aperture or that I have to? Also, does that K mean K-mount while the others are Ka-Mount, Kaf-Mount, etc.? I know it won't be autofocus but would have liked aperture to be controlled. edit: i found the answer. I tried to delete this but there is no delete. sorry.

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05-01-2010, 07:46 PM	#2
ripit Veteran Member Join Date: Mar 2010 Location: NewYork Posts: 899	I'm still trying to learn the various mounts myself. Since no one has responded yet though, perhaps some of these links will help. Pentax K mount - Wikipedia, the free encyclopedia Pentax Lens/Camera Compatibility - Mark Roberts Photography There is a really good link that shows pics of each mount and explains them but I cannot find it now (I think I have it somewhere in my mess of hundreds of book marks). If I find it I'll post it if I can unless someone beats me to it. I'm a noob but hopefully that will help a little.

05-01-2010, 07:52 PM	#3
Marc Sabatella Veteran Member Join Date: Sep 2006 Location: Denver, CO Photos: Gallery Posts: 10,685	Glad you found the answer, but since this a common point of confusion: First, all lenses that you will be using a K mount. That's the generic terms for every lens intended to mount to your camera. So just because a lens says K-mount, that doens't mean there is anything at all you "lose". But it is true that technically speaking, there are different "flavors" of K-mount: the original K, KA, KAF, KAF2, etc. See Welcome to Bojidar Dimitrov's Pentax K-Mount Page for tons more info. Also see the sticky thread at the top of the beginner's forum on how to use manual lenses - this is specific there to show you how to use the original K mount lenses (no "A" or "F").