SMC Pentax A lenses on K-7?

**Callamp** · 06-21-2010, 08:54 PM

I have a 120 mm Macro Pentax A, and a 35 mm Pentax A for my 645 camera and I'm considering getting a K-7. I suspect these lenses wouldn't fit a K-7, but is there some way they can be adapted to use on the K-7? I'm assuming these lenses are not weather sealed, so would loose that functionality. I love that 120 mm Macro and am saving my pennies for a 645D some day.

Smolk · 06-22-2010, 01:45 AM

With the Pentax 645 to K adapter they will fit on the K-7, but the A-function is lost, and if your lenses are FA, autofocus is lost as well. They will feel heavy, certainly the 120mm, but the 645 A 35mm, which I tried on the K-x, blows most small format lenses out of the water and the 120mm has been reported to have similar outstanding results on Pdigital. Obviously, I certainly did not try all of them! I don't expect to do it often myself.
You are assuming these lenses are not sealed ? Almost sounds like you do not have them yet.

Adam · 06-22-2010, 02:37 AM

check out our lens database to see the adapter is needed- it'll be in the 645 section: Pentax Lens Review Database - Lens Listings

If you're willing to carry the extra weight, you won't be disappointed optically!

Chuck-B&H · 06-22-2010, 06:19 AM

Originally posted by Callamp

I have a 120 mm Macro Pentax A, and a 35 mm Pentax A for my 645 camera and I'm considering getting a K-7. I suspect these lenses wouldn't fit a K-7, but is there some way they can be adapted to use on the K-7? I'm assuming these lenses are not weather sealed, so would loose that functionality. I love that 120 mm Macro and am saving my pennies for a 645D some day.

Hello,

I am sorry, we no longer carry the 645 adapter.
Pentax - 645 Lens to Pentax 35mm K-Mount Body Adapter - 38455 -

I did find this Owners Manual from Pentax in a PDF. I hope it helps.
http://www.pentaximaging.com/files/manual/645_Adapter_K_for_Lenses.pdf

C h u c k C a p r i o l a
Live Chat and E-Mail Sales Manager B&H Photo-Video

Thank you, we appreciate your business.
*** Peace on Earth ***

06-21-2010, 08:54 PM	#1
Callamp Site Supporter Join Date: Nov 2008 Location: SW Michigan Posts: 110	SMC Pentax A lenses on K-7? I have a 120 mm Macro Pentax A, and a 35 mm Pentax A for my 645 camera and I'm considering getting a K-7. I suspect these lenses wouldn't fit a K-7, but is there some way they can be adapted to use on the K-7? I'm assuming these lenses are not weather sealed, so would loose that functionality. I love that 120 mm Macro and am saving my pennies for a 645D some day.

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06-22-2010, 01:45 AM	#2
Smolk Pentaxian Join Date: Feb 2010 Location: Eerbeek Photos: Gallery \| Albums Posts: 1,857	With the Pentax 645 to K adapter they will fit on the K-7, but the A-function is lost, and if your lenses are FA, autofocus is lost as well. They will feel heavy, certainly the 120mm, but the 645 A 35mm, which I tried on the K-x, blows most small format lenses out of the water and the 120mm has been reported to have similar outstanding results on Pdigital. Obviously, I certainly did not try all of them! I don't expect to do it often myself. You are assuming these lenses are not sealed ? Almost sounds like you do not have them yet.

06-22-2010, 02:37 AM	#3
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,608	check out our lens database to see the adapter is needed- it'll be in the 645 section: Pentax Lens Review Database - Lens Listings If you're willing to carry the extra weight, you won't be disappointed optically!

06-22-2010, 06:19 AM	#4
Chuck-B&H B&H Photo Specialist Join Date: May 2010 Location: New York Posts: 935	Originally posted by Callamp I have a 120 mm Macro Pentax A, and a 35 mm Pentax A for my 645 camera and I'm considering getting a K-7. I suspect these lenses wouldn't fit a K-7, but is there some way they can be adapted to use on the K-7? I'm assuming these lenses are not weather sealed, so would loose that functionality. I love that 120 mm Macro and am saving my pennies for a 645D some day. Hello, I am sorry, we no longer carry the 645 adapter. Pentax - 645 Lens to Pentax 35mm K-Mount Body Adapter - 38455 - I did find this Owners Manual from Pentax in a PDF. I hope it helps. http://www.pentaximaging.com/files/manual/645_Adapter_K_for_Lenses.pdf C h u c k C a p r i o l a Live Chat and E-Mail Sales Manager B&H Photo-Video Thank you, we appreciate your business. * Peace on Earth *