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04-13-2013, 01:57 PM   #1
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SMC Pentax-FA lense question

Hi
Just joined this forum to ask my first question. I am considering picking up the K-30. I currently have an old and quite usable PZ-10 with a SMC FA 1:3.5 - 4.7 28-80mm lense. I want to use this lense with the K-30, but I can't find my spec sheet on the lense to confirm the mount type. Can anybody confirm the compatibility of this lense with the K-30. Thanks in advance.


04-13-2013, 02:06 PM   #2
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QuoteOriginally posted by dburroughs Quote
Hi
Just joined this forum to ask my first question. I am considering picking up the K-30. I currently have an old and quite usable PZ-10 with a SMC FA 1:3.5 - 4.7 28-80mm lense. I want to use this lense with the K-30, but I can't find my spec sheet on the lense to confirm the mount type. Can anybody confirm the compatibility of this lense with the K-30. Thanks in advance.
All the FA-series lenses should be perfectly compatible with a K-30.
04-13-2013, 02:07 PM   #3
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I haven't had the k-30 but I have the 28 - 80 lens from a Pentax MZ-7 film camera and it works perfectly on my new K5 II. I would imagine it should work on your k-30 as well.
04-13-2013, 02:15 PM   #4
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Pentax K-Mount Lenses Explained: The differences between various Pentax lens series

04-13-2013, 02:22 PM   #5
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Pretty much if a lens says Pentax on it, you can get it to work (except the old 110 series lenses). If you want to adjust the aperture with the aperture ring on the lens instead of doing by the camera, then you will need to enable the aperture ring in the menu. I think the menu item is titled "using aperture ring", and you need to set it to 2, which is "permitted".

Pentax digital cameras are wonderful. You will love the k-30.
04-13-2013, 04:11 PM   #6
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Welcome to the forum, I think it should work just fine.
04-13-2013, 05:51 PM   #7
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Thanks to all who responded. However, there is one nagging question after looking at the chart referred to by boriscleto. What is meant by a
"Crippled KAF2: This is a KAF2 mount without the coupler which indicates how far the lens is stopped down..."?
04-13-2013, 06:35 PM   #8
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In the 1990s, as a cost cutting measure, Pentax removed the coupler that passed aperture information,as set by the aperture ring, to the body. This is why older lenses, without the A setting on the aperture ring, have to be used in M mode with stop down (Green Button) metering. Lenses that do not have an aperture ring (FA J, D FA, DA, DA L, DA XS) are always in A mode.

As long as you keep your FA set to A you won't have to worry about it...

All Pentax DSLRs have this "Crippled" mount.


Last edited by boriscleto; 04-13-2013 at 06:42 PM.
04-15-2013, 04:00 AM   #9
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Thank you Boris for the clarification on that "crippled" terminology and for the link on the extensive and through info on lense compatibility.

Sincerely, Don
PS. What a great forum to belong to.
04-15-2013, 04:06 AM   #10
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I wonder how much money the cripled version of the mount saves.
04-15-2013, 04:11 AM   #11
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QuoteOriginally posted by wjt Quote
how much money the crippled version of the mount saves
Probably not much per lens, but just multiply it by the total number of lenses manufactured, I bet it comes to a small fortune.

Anyway wasn't done to save money, it was done for technical reasons, aye right.
04-15-2013, 05:36 AM   #12
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As others have said, your FA lens will mount on any Pentax digital camera with all functions operational. You will not have access to the lens correction features for distortion and CA, that are available in the K-30 with more modern lenses. Not a big deal, just thought I'd mention it for completeness. You can do your own corrections in post-processing if you shoot in raw.
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