I would like to see a list of available convertors

SOS7 · 12-05-2021, 05:30 AM

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.

An example would be I would love to be able to use My old Mamiya 6 lenses on My K1.

**jlstrawman** · 12-05-2021, 08:21 AM

lens converter mamiya to pentax - Google Search

**FozzFoster** · 12-05-2021, 10:46 AM

https://www.ricoh-imaging.co.jp/english/support/pdf/pentax_acc.pdf

page 19?

Paul the Sunman · 12-05-2021, 02:46 PM

Occasionally, someone pops up on PF asking if there is a XXX to YYY converter. That effectively comes down to the registration distances of the two systems. You cannot adapt an XXX lens to a YYY camera without loss of infinity focus if the Flange Focal Distance (FFD) of the lens is less than that of the camera, at least not without complex additional optics.

A useful list of FFD is found at

https://en.wikipedia.org/wiki/Flange_focal_distance

It seems that if it is possible, someone has adapted it! So the FFD list is a good place to start.

Now the Pentax K FFD is 45.46 mm, and for Mamiya 6 it is a whopping 56.2 mm. Quite an ask!

Last edited by Paul the Sunman; 12-05-2021 at 02:52 PM.

peggers · 12-05-2021, 04:33 PM

It seems that products such as Sony for example have converters available to convert Pentax lenses to the Sony format. This may be helping to make the used Pentax lenses more expensive to purchase. I think this may well be true of some vintage film lenses which can be used on full frame cameras. As the full frame cameras become more affordable and ubiquitous, the demand for vintage lenses increase.

Joetitch · 12-05-2021, 11:34 PM

Not to mention that Fotodiox is working on a P67 to K Tilt/Shift adaptor to be released hopefully spring 2022. They are also looking at other options of MF mounts that might work. I personally have everything crossed and waiting with anti.........cipation.😀

Wasp · 12-06-2021, 12:20 AM

The Fotodiox site is a good place to start:

https://fotodioxpro.com/collections/lens-mount-adapters

SOS7 · 12-06-2021, 06:38 AM

I will keep searching ... I will be getting an adaptor for my Mamiya 645 80mm 1.9 N lens. It is a fine lens. I wonder if anyone else has taken this path. Always good to do this sort of thing on a tripod. The K1 is perfect for this. it is that or wait and get the Pentax 645Z next version is I believe 60MP when it comes out in few years.

**UncleVanya** · 12-06-2021, 06:51 AM

Originally posted by SOS7

An example would be I would love to be able to use My old Mamiya 6 lenses on My K1.

This camera’s lenses? Mamiya Six | Camerapedia | Fandom

These lack a helicoid and I’m not sure they are removable. I’m sure I’m misunderstanding you.

**stevebrot** · 12-06-2021, 10:41 AM

Originally posted by UncleVanya

This camera’s lenses? Mamiya Six | Camerapedia | Fandom

These lack a helicoid and I’m not sure they are removable. I’m sure I’m misunderstanding you.

I own a Mamiya Six folder and while it is possible to remove the lens for service, I suspect the OP is interested in adapters for the more recent Mamiya 6 camera.

Mamiya 6 - Camera-wiki.org - The free camera encyclopedia

Steve

**UncleVanya** · 12-06-2021, 01:22 PM

Originally posted by stevebrot

I own a Mamiya Six folder and while it is possible to remove the lens for service, I suspect the OP is interested in adapters for the more recent Mamiya 6 camera.

Mamiya 6 - Camera-wiki.org - The free camera encyclopedia

Steve

Gotcha. Thanks.

SOS7 · 01-24-2022, 10:48 AM

This is one of the lenses I am talking about. 50mm for Mamiya 6 and I also have the 150mm. They are excellent lenses so adaptor if found might be good on My K1.

**wadge22** · 01-24-2022, 11:44 AM

Originally posted by Joetitch

Fotodiox is working on a P67 to K Tilt/Shift adaptor

Kipon sells a Hasselblad V to K mount tilt shift adapter, and a Pentax 645 to K mount shift adapter. Not that I would suggest paying what they are asking to find out if it's worth it.

---------- Post added 01-24-22 at 01:51 PM ----------

Originally posted by SOS7

An example would be I would love to be able to use My old Mamiya 6 lenses on My K1.

I found this sucker on ebay. Is that what you're after?

12-05-2021, 05:30 AM	#1
SOS7 Junior Member Join Date: Dec 2020 Posts: 36	I would like to see a list of available convertors 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. An example would be I would love to be able to use My old Mamiya 6 lenses on My K1.

01-24-2022, 11:44 AM	#13
wadge22 Loyal Site Supporter Join Date: Jun 2021 Location: NE Ohio Photos: Albums Posts: 897	Originally posted by Joetitch Fotodiox is working on a P67 to K Tilt/Shift adaptor Kipon sells a Hasselblad V to K mount tilt shift adapter, and a Pentax 645 to K mount shift adapter. Not that I would suggest paying what they are asking to find out if it's worth it. ---------- Post added 01-24-22 at 01:51 PM ---------- Originally posted by SOS7 An example would be I would love to be able to use My old Mamiya 6 lenses on My K1. I found this sucker on ebay. Is that what you're after? Last edited by wadge22; 01-24-2022 at 11:51 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Who else would like to see a retro Pentax camera ?	Michael Piziak	Product Suggestions and Feedback	78	01-14-2022 06:32 AM
Question Can I have a list of who quoted me like I can have a list of liked posts?	ChristianRock	Site Suggestions and Help	9	12-20-2019 08:12 AM
Asahi Man:1.4x and 2x tele-convertors will come to full frame (tentative :p)	D1N0	Pentax News and Rumors	22	05-10-2018 07:40 PM
645D and RAW-convertors	ogl	Pentax Medium Format	7	06-16-2010 08:27 AM
1.4 vs 1.7 vs 2.x Convertors	daacon	Pentax SLR Lens Discussion	15	04-02-2007 05:40 AM

12-05-2021, 08:21 AM	#2
jlstrawman Site Supporter Join Date: Feb 2010 Location: Midwest US Photos: Gallery Posts: 1,058	lens converter mamiya to pentax - Google Search

12-05-2021, 10:46 AM	#3
FozzFoster Custom User Title Join Date: Jan 2016 Location: Alberta Photos: Albums Posts: 6,395	https://www.ricoh-imaging.co.jp/english/support/pdf/pentax_acc.pdf page 19?

12-05-2021, 02:46 PM	#4
Paul the Sunman Pentaxian Join Date: Aug 2011 Location: Melbourne Photos: Gallery Posts: 4,388	Occasionally, someone pops up on PF asking if there is a XXX to YYY converter. That effectively comes down to the registration distances of the two systems. You cannot adapt an XXX lens to a YYY camera without loss of infinity focus if the Flange Focal Distance (FFD) of the lens is less than that of the camera, at least not without complex additional optics. A useful list of FFD is found at https://en.wikipedia.org/wiki/Flange_focal_distance It seems that if it is possible, someone has adapted it! So the FFD list is a good place to start. Now the Pentax K FFD is 45.46 mm, and for Mamiya 6 it is a whopping 56.2 mm. Quite an ask! Last edited by Paul the Sunman; 12-05-2021 at 02:52 PM.

12-05-2021, 04:33 PM	#5
peggers Senior Member Join Date: Apr 2012 Location: Endeavour Hills, Victoria, Australia Photos: Gallery Posts: 210	It seems that products such as Sony for example have converters available to convert Pentax lenses to the Sony format. This may be helping to make the used Pentax lenses more expensive to purchase. I think this may well be true of some vintage film lenses which can be used on full frame cameras. As the full frame cameras become more affordable and ubiquitous, the demand for vintage lenses increase.

12-05-2021, 11:34 PM	#6
Joetitch Senior Member Join Date: Aug 2016 Location: Leura NSW Posts: 294	Not to mention that Fotodiox is working on a P67 to K Tilt/Shift adaptor to be released hopefully spring 2022. They are also looking at other options of MF mounts that might work. I personally have everything crossed and waiting with anti.........cipation.😀

12-06-2021, 12:20 AM	#7
Wasp Pentaxian Join Date: Mar 2017 Location: Pretoria Photos: Gallery Posts: 4,070	The Fotodiox site is a good place to start: https://fotodioxpro.com/collections/lens-mount-adapters

12-06-2021, 06:38 AM	#8
SOS7 Junior Member Join Date: Dec 2020 Posts: 36 Original Poster	I will keep searching ... I will be getting an adaptor for my Mamiya 645 80mm 1.9 N lens. It is a fine lens. I wonder if anyone else has taken this path. Always good to do this sort of thing on a tripod. The K1 is perfect for this. it is that or wait and get the Pentax 645Z next version is I believe 60MP when it comes out in few years.

12-06-2021, 06:51 AM	#9
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 24,830	Originally posted by SOS7 An example would be I would love to be able to use My old Mamiya 6 lenses on My K1. This camera’s lenses? Mamiya Six \| Camerapedia \| Fandom These lack a helicoid and I’m not sure they are removable. I’m sure I’m misunderstanding you.

12-06-2021, 10:41 AM	#10
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by UncleVanya This camera’s lenses? Mamiya Six \| Camerapedia \| Fandom These lack a helicoid and I’m not sure they are removable. I’m sure I’m misunderstanding you. I own a Mamiya Six folder and while it is possible to remove the lens for service, I suspect the OP is interested in adapters for the more recent Mamiya 6 camera. Mamiya 6 - Camera-wiki.org - The free camera encyclopedia Steve

12-06-2021, 01:22 PM	#11
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 24,830	Originally posted by stevebrot I own a Mamiya Six folder and while it is possible to remove the lens for service, I suspect the OP is interested in adapters for the more recent Mamiya 6 camera. Mamiya 6 - Camera-wiki.org - The free camera encyclopedia Steve Gotcha. Thanks.

01-24-2022, 10:48 AM	#12
SOS7 Junior Member Join Date: Dec 2020 Posts: 36 Original Poster	This is one of the lenses I am talking about. 50mm for Mamiya 6 and I also have the 150mm. They are excellent lenses so adaptor if found might be good on My K1.

Thread Tools	Search this Thread
	Search this Thread: Advanced Search