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05-01-2010, 05:49 PM   #1
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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.

05-01-2010, 07:46 PM   #2
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Join Date: Mar 2010
Location: NewYork
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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
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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").
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