Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
10-10-2015, 03:08 PM   #1
Senior Member

Join Date: May 2014
Location: san diego, ca
Posts: 100
fotodiox sq-pk adapter and k-20d not getting along

just got a fotodiox sq-pk adapter to use my bronica lenses on my pentax bodies, but the second i lock the adapter into the body all functions blank out and the shutter does nothing. take the adapter off and the camera is perfectly happy to shoot without a lens. is there something i can do to fix this?

10-10-2015, 05:49 PM   #2
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 4,258
Do you have "Use Aperture Ring" enabled in the setup menu? Are you shooting in M mode?

Is the K-mount side of the adapter bare metal or is it black coated? You may need to remove the black coating over the contacts on the mount. Test this by putting some thin metal foil over the contacts between the camera and the adapter.
10-11-2015, 12:10 AM   #3
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 27,424
QuoteOriginally posted by Not a Number Quote
is the K-mount side of the adapter bare metal or is it black coated?
Should not be a problem on the K20D.

In the C (custom settings) menu #36 "Using aperture ring", change the value from "prohibited" to "permitted". That will enable shutter release. See page 252 in the user manual for the details on what features are available. There is also a "sticky" on this site detailing metering with adapted lenses:

10-15-2015, 02:17 AM   #4
Senior Member

Join Date: May 2014
Location: san diego, ca
Posts: 100
Original Poster
setting aperture control did the trick — thanks!


  • 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, fotodiox, pentax help, photography, troubleshooting
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Auto Chinon 50mm f1.7 not getting along with my K-50 TML Troubleshooting and Beginner Help 6 04-03-2015 04:05 PM
For Sale - Sold: Fotodiox PK to Q adapter akptc Sold Items 1 01-27-2015 09:25 PM
For Sale - Sold: Tamron Adaptall PK and PK/A adapter (and freebie - Adaptall 2 80-210mm) kp0c Sold Items 10 11-08-2014 06:14 AM
For Sale - Sold: Fotodiox K/PK to Q Adapter gdneil Sold Items 2 11-29-2013 08:40 PM
For Sale - Sold: Pentax Q with 02 Zoom and Fotodiox K-Q adapter crewl1 Sold Items 2 09-13-2013 12:18 PM

All times are GMT -7. The time now is 11:49 PM. | See also:, 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?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]