Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-29-2010, 11:35 AM   #1
Senior Member




Join Date: Jan 2009
Location: Perth, Australia
Photos: Gallery | Albums
Posts: 180
MYO (Make Your Own) 645 to K Adapter

I am not sure if this is the right place to ask but here goes.

I have seen pics of a 645 to K adapter that someone made him/herself on pentaxforum but I am not sure how to find those pics again.

I have been looking for these adapters (original Pentax if possible) at reasonable price (USD 200 or thereabout is not what I considered reasonable ).

Has anyone made their own adapter?
Could you please provide step-by-step instructions?
Pics would really help.


cheers

06-29-2010, 12:04 PM   #2
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 43,032
It might be in our DIY section, here: Do-It-Yourself - PentaxForums.com

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com's high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

07-01-2010, 02:08 AM   #3
Senior Member




Join Date: Jan 2009
Location: Perth, Australia
Photos: Gallery | Albums
Posts: 180
Original Poster
Thanks Adam, but it's not in that section.

I dont think it was a thread by itself but rather a post in a thread about something else.
Not exactly step-by-step instructions but a pic of an adapter that he made.

cheers
07-10-2010, 02:41 AM   #4
Inactive Account




Join Date: Apr 2009
Location: isle of wight england
Posts: 24
A quick and very cheap adapter can be made from a m42 3 part extender and a 645 lens cap and a m42 body adapter.
Use the 10mm extender connected into the m42 adapter. Fit to canera.
Cut a section from another part of the extender to leave a 42mm thread with a flange.
Cut a hole in the cap to contain the flange and thread through cap into the other end of the 10mm adapter. Screw up tight. It works. Not sure yet if the 10mm extender gives the right distance to shoot to infinity.
Register distance for K mount is 45.46
Register distance for 645 is 70.87.
Difference is 25.41. Equivilent to an imperial inch.
The 10mm extender plus the cap is about this.

I have only just made this adapter and not tested it fully.
Maybe better DIY experts can help.

07-19-2010, 01:09 AM   #5
Senior Member




Join Date: Jan 2009
Location: Perth, Australia
Photos: Gallery | Albums
Posts: 180
Original Poster
Thanks bannor75.

Since then I have considered getting one on ebay from Hongkong / China for about USD 100.

Has anyone tried this conventer?
How does it compare to the real thing?

thanks
07-20-2010, 01:27 PM   #6
Inactive Account




Join Date: Apr 2009
Location: isle of wight england
Posts: 24
645 to K

The diy adapter works really well. It really depends how much you intend to use this. If regularly, then, yes, there is a Honk Kong made equivelent to Pentax. I have not been able to source. I shall be interested in your conclusions.
I have a 645 Pentax 300mm. and this needs supporting using a video lens holder. I am not ready to invest in shorter lens but am very tempted following my results of the 300mm.
Happy experimenting
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
adapter, camera, medium format, pics
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Will the 67 to 645 adapter make a comeback? mikebob Pentax Medium Format 27 06-27-2010 08:59 AM
645 adapter puzzle pdstromberg Pentax SLR Lens Discussion 15 04-22-2009 12:28 PM
Functioning 645 Adapter? Rupert Pentax SLR Lens Discussion 7 03-08-2009 08:12 AM
645 to K adapter straightshooter Pentax SLR Lens Discussion 2 08-03-2008 06:10 AM
645 or 67 adapter keithlester Pentax SLR Lens Discussion 2 03-15-2007 09:14 AM



All times are GMT -7. The time now is 11:39 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top