Pentax 6x7 Outer Bayonet to Pentax-K adapter

therion · 09-12-2009, 07:45 AM

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I have bought great SMC Takumar 6x7 400/4 lens, it has outer bayonet 6x7 mount. I would use it with K-7. Please haven´t you seen any such adapter?

I have inner bayonet 6x7 to Pentax K adapter.

I know there is one possibility, use 6x7 TC, which has on one side outer and inner bayonet (both) and at other side, I think, only inner bayonet
But I will loose f4 aperture :-/

Jewelltrail · 09-12-2009, 08:23 AM

I am not sure I completely understand--check these threads for help. Best of luck!

https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/49428-medium-f...20-sensor.html

67 adapter, great deals on Cameras Photo, eBay Motors on eBay!

Fotodiox Pro Pentax 67- Pentax K Mount Adapter - eBay (item 350245941895 end time Sep-27-09 17:12:42 PDT)

therion · 09-12-2009, 11:57 AM

Yes, You have not understand my question.

I will explain:

Pentax 67 has dual bayonet mount - inner and outer bayonet.

Lenses to 300mm has classical inner bayonet

Lenses from 400mm has outer bayonet.

And I have SMC Takumar 6x7 400/4, which has outer bayonet and I would like to use it with K-7. So I need different adapter.

jogiba · 09-12-2009, 01:43 PM

The Pentax 6x7 K-mount adapter works with both inner and outer 6x7 Pentax lenses. I had the 400mm F4 6x7 lens that I also used on my LX body and still use the adapter with my other 6x7 lenses.

http://www.keh.com/OnLineStore/ProductDetail.aspx?groupsku=PK390090006520&br...06x7%20adapter

Last edited by jogiba; 09-12-2009 at 01:51 PM.

therion · 09-13-2009, 01:50 AM

Thak You very much, Jogiba! You just rocks!
And does have this adapter also tripod mount?
If not, how about using heavy 6x7 lenses without it on tripod?

And what do You think about this adapter?
It seems that it also has outer and inner bayonet:

http://cgi.ebay.co.uk/PENTAX-67-6X7-lensto-PK-K20D-K10D-K100D-K200D-KM-K1000...d=p3911.c0.m14

And what about Your experiences with 6x7 400/4 lens?
Was it good in direct sunlight?
You are not using it anymore?

Thanx for Your reply

Jewelltrail · 09-14-2009, 10:14 AM

Therion, the link I provide above for the 67 adapter says it works on All Pentax 6x7 67, 67 II system lenses. Also, it comes with the tri-pod mount. I use a 67 adapter to K-mount which has the tri-pod mount. I would not want to be without the tri-pod mount. If you have questions concerning its utility, you can contact the seller.

feverbeaver · 09-14-2009, 12:00 PM

Originally posted by Jewelltrail

I am not sure I completely understand--check these threads for help. Best of luck!

Fotodiox Pro Pentax 67- Pentax K Mount Adapter - eBay (item 350245941895 end time Sep-27-09 17:12:42 PDT)

This one is only for the inner-bayonet lenses. You can see the difference between the original Pentax adapter and the 3rd-party one.

jogiba · 09-14-2009, 04:05 PM

Originally posted by therion

Thak You very much, Jogiba! You just rocks!
And does have this adapter also tripod mount?
If not, how about using heavy 6x7 lenses without it on tripod?

And what do You think about this adapter?
It seems that it also has outer and inner bayonet:

PENTAX 67 6X7 lensto PK K20D K10D K100D K200D KM K1000D on eBay (end time 26-Sep-09 07:52:47 BST)

And what about Your experiences with 6x7 400/4 lens?
Was it good in direct sunlight?
You are not using it anymore?

Thanx for Your reply

That adapter looks to have both the outer and inner 6x7 mount also. The 400mm F4 Pentax 6x7 lens has a tripod mount . I sold my 6x7 400mm F4 lens to Adorama along with two 6x7 bodies and other 6x7 lenses from 35mm fisheye up back in 1991. I still have one 6x7 Pentax body and four 6x7 lenses but have not used film since 2001.

Here is an old photo taken in the late 80's with my 400mm 6x7 F4 lens and Kodachrome 64 120 film 1/1000 sec @ F4.

Ratmagiclady · 09-14-2009, 04:44 PM

Hoohoo. Nothing more to add, but that really does look like fun.

therion · 09-17-2009, 10:54 PM

Beautiful foto Jogiba! ThanX!!!

**Ron Boggs** · 09-18-2009, 08:20 AM

Hey, that's my 67M*400/4 in the lower photo...lifted from the lens reviews...the little item near the mount end is a drop-in circular polarizer with external wheel to rotate the polarizer while it's inside the lens.

That particular lens is an inner bayonet lens rather than the outer bayonet used in Takamar teles for the 67 system. In fact, just this week I attached a Fotodiox 67 to K mount adapter to that lens. And the Fotodiox does not accommodate outer bayonet mounts.

Pentaxuser · 07-07-2013, 12:08 AM

I have just bought a Takumar 600mm f1:4 from Hong Kong for my 67II and I am open for any hints.
It is a great lens, has a few disadvantages but for me it is worth the money I gave.
I do not (yet) use extensions, but the rear filter is problematic. If you use the wrong Filter in the Adapter-Ring, you won't come to
Infinite position. But what is the "right" Filter? Where can I get one? What sort of Filters did exist?
And I'm looking for outer Bayonet Adapters, e.g. for 645D or Canon DSLR for this lens...

littledrawe · 07-08-2013, 12:15 AM

Originally posted by Pentaxuser

I have just bought a Takumar 600mm f1:4 from Hong Kong for my 67II and I am open for any hints.
It is a great lens, has a few disadvantages but for me it is worth the money I gave.
I do not (yet) use extensions, but the rear filter is problematic. If you use the wrong Filter in the Adapter-Ring, you won't come to
Infinite position. But what is the "right" Filter? Where can I get one? What sort of Filters did exist?
And I'm looking for outer Bayonet Adapters, e.g. for 645D or Canon DSLR for this lens...

You may want to hit up the folks in the medium format section of the forum for some more accurate information.

https://www.pentaxforums.com/forums/pentax-medium-format-645-6x7-645d/

The Genuine Pentax adapter is probably the best thing since they are typically compatible. Fotodiox is another company that makes a lot of adapters and most likely has the ones you want. @desertscape seems like the best one to answer the questions you have, most of the posts I read from him sound like a different language to me so that must mean that there is a lot of sound information contained therein!

09-12-2009, 07:45 AM	#1
therion Senior Member Join Date: Feb 2009 Location: SLovakia Photos: Gallery Posts: 141	Pentax 6x7 Outer Bayonet to Pentax-K adapter 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. I have bought great SMC Takumar 6x7 400/4 lens, it has outer bayonet 6x7 mount. I would use it with K-7. Please haven´t you seen any such adapter? I have inner bayonet 6x7 to Pentax K adapter. I know there is one possibility, use 6x7 TC, which has on one side outer and inner bayonet (both) and at other side, I think, only inner bayonet But I will loose f4 aperture :-/

09-13-2009, 01:50 AM	#5
therion Senior Member Join Date: Feb 2009 Location: SLovakia Photos: Gallery Posts: 141 Original Poster	Thak You very much, Jogiba! You just rocks! And does have this adapter also tripod mount? If not, how about using heavy 6x7 lenses without it on tripod? And what do You think about this adapter? It seems that it also has outer and inner bayonet: http://cgi.ebay.co.uk/PENTAX-67-6X7-lensto-PK-K20D-K10D-K100D-K200D-KM-K1000...d=p3911.c0.m14 And what about Your experiences with 6x7 400/4 lens? Was it good in direct sunlight? You are not using it anymore? Thanx for Your reply Last edited by therion; 09-13-2009 at 01:56 AM.

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09-12-2009, 08:23 AM	#2
Jewelltrail Veteran Member Join Date: May 2008 Location: Rhode Island Photos: Albums Posts: 4,180	I am not sure I completely understand--check these threads for help. Best of luck! https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/49428-medium-f...20-sensor.html 67 adapter, great deals on Cameras Photo, eBay Motors on eBay! Fotodiox Pro Pentax 67- Pentax K Mount Adapter - eBay (item 350245941895 end time Sep-27-09 17:12:42 PDT)

09-12-2009, 11:57 AM	#3
therion Senior Member Join Date: Feb 2009 Location: SLovakia Photos: Gallery Posts: 141 Original Poster	Yes, You have not understand my question. I will explain: Pentax 67 has dual bayonet mount - inner and outer bayonet. Lenses to 300mm has classical inner bayonet Lenses from 400mm has outer bayonet. And I have SMC Takumar 6x7 400/4, which has outer bayonet and I would like to use it with K-7. So I need different adapter.

09-12-2009, 01:43 PM	#4
jogiba Banned Join Date: Sep 2006 Location: Millstone,NJ Posts: 6,491	The Pentax 6x7 K-mount adapter works with both inner and outer 6x7 Pentax lenses. I had the 400mm F4 6x7 lens that I also used on my LX body and still use the adapter with my other 6x7 lenses. http://www.keh.com/OnLineStore/ProductDetail.aspx?groupsku=PK390090006520&br...06x7%20adapter Last edited by jogiba; 09-12-2009 at 01:51 PM.

09-14-2009, 10:14 AM	#6
Jewelltrail Veteran Member Join Date: May 2008 Location: Rhode Island Photos: Albums Posts: 4,180	Therion, the link I provide above for the 67 adapter says it works on All Pentax 6x7 67, 67 II system lenses. Also, it comes with the tri-pod mount. I use a 67 adapter to K-mount which has the tri-pod mount. I would not want to be without the tri-pod mount. If you have questions concerning its utility, you can contact the seller.

09-14-2009, 12:00 PM	#7
feverbeaver Senior Member Join Date: Aug 2008 Location: Langen, Germany Photos: Gallery Posts: 106	Originally posted by Jewelltrail I am not sure I completely understand--check these threads for help. Best of luck! Fotodiox Pro Pentax 67- Pentax K Mount Adapter - eBay (item 350245941895 end time Sep-27-09 17:12:42 PDT) This one is only for the inner-bayonet lenses. You can see the difference between the original Pentax adapter and the 3rd-party one.

09-14-2009, 04:05 PM	#8
jogiba Banned Join Date: Sep 2006 Location: Millstone,NJ Posts: 6,491	Originally posted by therion Thak You very much, Jogiba! You just rocks! And does have this adapter also tripod mount? If not, how about using heavy 6x7 lenses without it on tripod? And what do You think about this adapter? It seems that it also has outer and inner bayonet: PENTAX 67 6X7 lensto PK K20D K10D K100D K200D KM K1000D on eBay (end time 26-Sep-09 07:52:47 BST) And what about Your experiences with 6x7 400/4 lens? Was it good in direct sunlight? You are not using it anymore? Thanx for Your reply That adapter looks to have both the outer and inner 6x7 mount also. The 400mm F4 Pentax 6x7 lens has a tripod mount . I sold my 6x7 400mm F4 lens to Adorama along with two 6x7 bodies and other 6x7 lenses from 35mm fisheye up back in 1991. I still have one 6x7 Pentax body and four 6x7 lenses but have not used film since 2001. Here is an old photo taken in the late 80's with my 400mm 6x7 F4 lens and Kodachrome 64 120 film 1/1000 sec @ F4.

09-14-2009, 04:44 PM	#9
Ratmagiclady Veteran Member Join Date: Nov 2008 Location: GA Photos: Gallery \| Albums Posts: 13,563	Hoohoo. Nothing more to add, but that really does look like fun.

09-17-2009, 10:54 PM	#10
therion Senior Member Join Date: Feb 2009 Location: SLovakia Photos: Gallery Posts: 141 Original Poster	Beautiful foto Jogiba! ThanX!!!

09-18-2009, 08:20 AM	#11
Ron Boggs Site Supporter Join Date: Feb 2008 Location: MT Photos: Gallery Posts: 1,349	Hey, that's my 67M*400/4 in the lower photo...lifted from the lens reviews...the little item near the mount end is a drop-in circular polarizer with external wheel to rotate the polarizer while it's inside the lens. That particular lens is an inner bayonet lens rather than the outer bayonet used in Takamar teles for the 67 system. In fact, just this week I attached a Fotodiox 67 to K mount adapter to that lens. And the Fotodiox does not accommodate outer bayonet mounts.

07-07-2013, 12:08 AM	#12
Pentaxuser Site Supporter Join Date: Jun 2013 Posts: 4	I have just bought a Takumar 600mm f1:4 from Hong Kong for my 67II and I am open for any hints. It is a great lens, has a few disadvantages but for me it is worth the money I gave. I do not (yet) use extensions, but the rear filter is problematic. If you use the wrong Filter in the Adapter-Ring, you won't come to Infinite position. But what is the "right" Filter? Where can I get one? What sort of Filters did exist? And I'm looking for outer Bayonet Adapters, e.g. for 645D or Canon DSLR for this lens...

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07-08-2013, 12:15 AM	#13
littledrawe Veteran Member Join Date: Jan 2010 Location: Red Rock Photos: Gallery \| Albums Posts: 2,514	Originally posted by Pentaxuser I have just bought a Takumar 600mm f1:4 from Hong Kong for my 67II and I am open for any hints. It is a great lens, has a few disadvantages but for me it is worth the money I gave. I do not (yet) use extensions, but the rear filter is problematic. If you use the wrong Filter in the Adapter-Ring, you won't come to Infinite position. But what is the "right" Filter? Where can I get one? What sort of Filters did exist? And I'm looking for outer Bayonet Adapters, e.g. for 645D or Canon DSLR for this lens... You may want to hit up the folks in the medium format section of the forum for some more accurate information. https://www.pentaxforums.com/forums/pentax-medium-format-645-6x7-645d/ The Genuine Pentax adapter is probably the best thing since they are typically compatible. Fotodiox is another company that makes a lot of adapters and most likely has the ones you want. @desertscape seems like the best one to answer the questions you have, most of the posts I read from him sound like a different language to me so that must mean that there is a lot of sound information contained therein!