Win a Pentax Limited Lens: Raffle Now Live!

toby841 · 12-17-2019, 05:19 PM

Staff note: This post may contain affiliate links, which means Pentax Forums may earn a small commission if a visitor clicks through and makes a purchase. If you would like to support the forum directly, you may also make a donation here.

There is a lens on ebay that has a Pentax ll mount. . Can someone tell me what cameras it fits i want the lens if it will fit the k mount camera K20D) The seller doesn't know

**aslyfox** · 12-17-2019, 05:37 PM

never heard of a " Pentax II " mount

Quote:

The Evolution of the Pentax K-mount

Technical Information and a Little Bit of History
By PF Staff in Articles and Tips on Dec 29, 2014

The Evolution of the Pentax K-mount
Pentax introduced the K-mount in 1975 and it's still the mount used in today's digital SLR cameras. Over the course of its 40-year history, the K mount has gone through several enhancements to facilitate new camera features. Even then, a K-mount lens from 1975 will mount on and work on your Pentax DSLR today! In fact, Pentax users are among the few who have access to such a wide range of legacy lenses. In this article we will describe the K-mount in its various incarnations.

The K-mount is a bayonet lens mount (the type employed by all modern lenses) which replaced the original M42 screw mount, thus making changing lenses must faster. While the screw mount requires three complete revolutions of the lens in order to mount tightly, the K-mount only needs a twist of about 60 degrees. The diameter of the K-mount is also larger than that of the M42 making faster lenses and more robust optical designs possible.

Read more at: https://www.pentaxforums.com/articles/photo-articles/evolution-of-pentax-k-m...#ixzz68Pkt6XXO

but I don't claim to be an expert

**boriscleto** · 12-17-2019, 05:41 PM

This is a lens for Mamiya 645...

Mamiya-Sekor C 500mm f/5.6 Lens with Pentax II Mount + Case No. 14280 | eBay

It should be in my thread...

The worst of Craigslist/Shopgoodwill/eBay etc. - PentaxForums.com

A $40 adapter would be needed for a K mount camera

Mamiya 645 (M645) Mount Lenses to Pentax K (PK) Mount SLR Camera Body Pro Mount Adapter ? Fotodiox, Inc. USA

toby841 · 12-17-2019, 06:18 PM

Originally posted by boriscleto

This is a lens for Mamiya 645...

Mamiya-Sekor C 500mm f/5.6 Lens with Pentax II Mount + Case No. 14280 | eBay

It should be in my thread...

The worst of Craigslist/Shopgoodwill/eBay etc. - PentaxForums.com

A $40 adapter would be needed for a K mount camera

Mamiya 645 (M645) Mount Lenses to Pentax K (PK) Mount SLR Camera Body Pro Mount Adapter ? Fotodiox, Inc. USA

Thank you so much you helped me a lot ...i was not familiar with the 645 but was thing it might be a medium format mount..Thank you for the quick answer....

**TwoUptons** · 12-17-2019, 06:27 PM

But the mirror is clear, so it’s good, right?

But yeah, Mamiya mount.

Could be an interesting lens, though...

-Eric

12-17-2019, 05:19 PM	#1
toby841 New Member Join Date: Oct 2017 Posts: 2	Pentax II Mount Staff note: This post may contain affiliate links, which means Pentax Forums may earn a small commission if a visitor clicks through and makes a purchase. If you would like to support the forum directly, you may also make a donation here. There is a lens on ebay that has a Pentax ll mount. . Can someone tell me what cameras it fits i want the lens if it will fit the k mount camera K20D) The seller doesn't know

12-17-2019, 05:41 PM	#3
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,477	This is a lens for Mamiya 645... Mamiya-Sekor C 500mm f/5.6 Lens with Pentax II Mount + Case No. 14280 \| eBay It should be in my thread... The worst of Craigslist/Shopgoodwill/eBay etc. - PentaxForums.com A $40 adapter would be needed for a K mount camera Mamiya 645 (M645) Mount Lenses to Pentax K (PK) Mount SLR Camera Body Pro Mount Adapter ? Fotodiox, Inc. USA Last edited by boriscleto; 12-17-2019 at 05:47 PM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Does Pentax K-Mount DA 18-270mm work well with Pentax K-1 Mark II	Bavand	Pentax K-1 & K-1 II	11	09-23-2018 03:04 AM
For Sale - Sold: Pentax Mount Tamron SP AF 17-50MM F/2.8 XR Di II LD Aspherical (IF) Lens	deathspared	Sold Items	2	05-01-2018 09:21 AM
K-Mount or A-Mount to E-Mount Adapters with AF?	reivax	Canon, Nikon, Sony, and Other Camera Brands	5	01-01-2015 09:35 AM
For Sale - Sold: Bellows II Screw Mount + Slide Thingy	Jamey777	Sold Items	3	01-25-2014 05:12 PM
For Sale - Sold: Bushnell Spacemaster II Camera Mount with T Mount K	LX60	Sold Items	4	03-05-2009 02:00 PM

12-17-2019, 05:37 PM	#2
aslyfox Seeker of Knowledge Join Date: Aug 2016 Location: Topeka, Kansas Photos: Gallery \| Albums Posts: 24,583	never heard of a " Pentax II " mount Quote: The Evolution of the Pentax K-mount Technical Information and a Little Bit of History By PF Staff in Articles and Tips on Dec 29, 2014 The Evolution of the Pentax K-mount Pentax introduced the K-mount in 1975 and it's still the mount used in today's digital SLR cameras. Over the course of its 40-year history, the K mount has gone through several enhancements to facilitate new camera features. Even then, a K-mount lens from 1975 will mount on and work on your Pentax DSLR today! In fact, Pentax users are among the few who have access to such a wide range of legacy lenses. In this article we will describe the K-mount in its various incarnations. The K-mount is a bayonet lens mount (the type employed by all modern lenses) which replaced the original M42 screw mount, thus making changing lenses must faster. While the screw mount requires three complete revolutions of the lens in order to mount tightly, the K-mount only needs a twist of about 60 degrees. The diameter of the K-mount is also larger than that of the M42 making faster lenses and more robust optical designs possible. Read more at: https://www.pentaxforums.com/articles/photo-articles/evolution-of-pentax-k-m...#ixzz68Pkt6XXO but I don't claim to be an expert

12-17-2019, 06:18 PM	#4
toby841 New Member Join Date: Oct 2017 Posts: 2 Original Poster	Originally posted by boriscleto This is a lens for Mamiya 645... Mamiya-Sekor C 500mm f/5.6 Lens with Pentax II Mount + Case No. 14280 \| eBay It should be in my thread... The worst of Craigslist/Shopgoodwill/eBay etc. - PentaxForums.com A $40 adapter would be needed for a K mount camera Mamiya 645 (M645) Mount Lenses to Pentax K (PK) Mount SLR Camera Body Pro Mount Adapter ? Fotodiox, Inc. USA Thank you so much you helped me a lot ...i was not familiar with the 645 but was thing it might be a medium format mount..Thank you for the quick answer....

12-17-2019, 06:27 PM	#5
TwoUptons Loyal Site Supporter Join Date: Nov 2015 Photos: Albums Posts: 4,227	But the mirror is clear, so it’s good, right? But yeah, Mamiya mount. Could be an interesting lens, though... -Eric