bench_ubbster
Bench Meister
Reged: 08/08/2006
Posts: 2656
Loc: Cambridgeshire, UK
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First one: I hope this is the right room as it does have a Pentax lens mount? 
Second: Now, regarding this Pentax lens mount. Am I correct in thinking that if I get a Pentax K - Tamron adaptall (2) adapter, I can use my Tamron lenses? Of course they will be manual focus, but will it be stop-down metering or will auto work? I assume the shake reduction will also work if I go into the menu set-up and set the focal length for the lens.
Third: Can I use all the K mount lenses on the Samsung (ie K, Ka, Kf etc)?
The Tamron adaptall lenses I want to use are the 90mm f/2.5 macro (with and without extension tubes) and 17mm (if that makes a difference).
I'm not a complete Pentax novice, as I did have a Pentax Auto 110 set 
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Dave_Cox
old'n'grumpy
Reged: 12/07/2006
Posts: 3107
Loc: somewhere in Sussex
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All manual & auto K-mount lenses can be used on K-mount cameras, but I'm not sure on the menu/metering setup on the Samsung as far as using the aperture ring goes. Certainly on the K10/K20 most manual lenses can be used in manual and aperture-priority modes. I've successfully used some pretty old glass on mine in the past.
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Growing old disgracefully!
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johnriley1uk
addict
Reged: 08/06/2006
Posts: 436
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It's pretty much the same as the Pentax K20D and as far as I know behaves in exactly the same way with older lenses.
The most convenient lenses to use will have an "A" on the aperture ring, but all prior ones are useable as well, albeait in stop down mode. You can meter manually or use Aperture Priority.
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Best regards
John Riley
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bench_ubbster
Bench Meister
Reged: 08/08/2006
Posts: 2656
Loc: Cambridgeshire, UK
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Cool 
Many thanks both. I look forward to seeing the results from my Tamron lenses as I've just purchased PK mount adaptall 2 on ebay.
Many thanks both
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welshwizard645
addict
Reged: 29/09/2006
Posts: 440
Loc: Out of my mind
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Quote:
First one: I hope this is the right room as it does have a Pentax lens mount?
Third: Can I use all the K mount lenses on the Samsung (ie K, Ka, Kf etc)?
To 1) Yes, you're welcome her as the GX-20 is a K20D in another set of clothes, both fine cameras.
To 2) NO NO NO NO No!!! Why? PKR lenses (ie to fit Ricoh) tend to get jammed on the PKAF mount cameras.. So avoid Ricoh, Rikenon and or PKR fit lenses. I've heard of no other incompatibilities for the K-mount system..
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bench_ubbster
Bench Meister
Reged: 08/08/2006
Posts: 2656
Loc: Cambridgeshire, UK
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Thanks, very useful.
STAY CLEAR OF PKR 
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Master of the Bench and Global Ambassador of the Brotherhood of the Bench
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Done&rundleCams
Senior Member
Reged: 20/12/2001
Posts: 16755
Loc: Vancouver, BC
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Quote:
Thanks, very useful.
STAY CLEAR OF PKR
Hi Richard,
If, at all, possible try and get the Tamron PK/A adaptall mount which will be like having an
"A-series lens" which will you to use all the features of the camera "with the exception of AF" 
Also, I have used both of the Tamron lens (90/2.5 and 17/3.5) you have and, as you know, they
are both stellar lenses
Cheers and looking forward to seeing some pics
Jack
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Life is a Photo-op
MY BLOG: www.nakedmanonawire.blogspot.com
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bench_ubbster
Bench Meister
Reged: 08/08/2006
Posts: 2656
Loc: Cambridgeshire, UK
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Thanks Jack and will do
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