Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
03-06-2014, 04:26 AM   #1
New Member




Join Date: Mar 2014
Posts: 2
Trouble mounting Sigma Lens

I have a Pentax Kx which has a standard Pentax 18-55mm lens and I only use the Auto Picture Mode.
I have just purchased a Sigma APO 70-300mm F4-5.6 DG MACRO Lens.
When I mount the Sigma Lens, then the display says Av Aperture Priority Automatic Exposure and I can't use the camera.
If I exchange back to original lens then the display is back on Auto Picture Mode and camera operates.
What am I doing wrong?

03-06-2014, 07:29 AM   #2
Site Supporter
boriscleto's Avatar

Join Date: Dec 2009
Location: Liverpool, NY
Photos: Gallery
Posts: 12,869
The Sigma lens has an aperture ring. Is the ring set to the 'A' position? There is a small button on the ring that has to be pressed to position the ring on 'A'.
03-06-2014, 07:30 AM   #3
Inactive Account




Join Date: Dec 2008
Location: North Carolina
Photos: Albums
Posts: 1,720
Does the lens have an aperture ring? It must be set to the A position to work properly in all modes.

If it doesn't have an aperture ring or it is already set to A then the contacts are likely dirty.
03-06-2014, 10:16 PM   #4
New Member




Join Date: Mar 2014
Posts: 2
Original Poster
QuoteOriginally posted by boriscleto Quote
The Sigma lens has an aperture ring. Is the ring set to the 'A' position? There is a small button on the ring that has to be pressed to position the ring on 'A'.
Thanks very much. Needed to be set to A position. Works fine now. Thanks again.

---------- Post added 03-07-14 at 04:17 PM ----------

QuoteOriginally posted by elliott Quote
Does the lens have an aperture ring? It must be set to the A position to work properly in all modes.

If it doesn't have an aperture ring or it is already set to A then the contacts are likely dirty.
Thanks very much. Needed to be set to A position. Works fine now. Thanks again.

Read more at: https://www.pentaxforums.com/forums/58-pentax-beginners-corner-q/253884-troub...#ixzz2vFdBXI69

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!
aperture, auto, camera, display, lens, mode, pentax, pentax help, photography, picture, position, sigma, sigma lens, thanks, trouble mounting sigma
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Vivitar series 1 lens mounting send2nate Pentax SLR Lens Discussion 4 06-20-2013 08:21 PM
Sigma 610-DG SUPER Trouble jzjr Pentax Camera and Field Accessories 4 10-30-2012 09:30 AM
Lens mounting system commonality? Dewman Pentax SLR Lens Discussion 5 05-08-2012 04:31 AM
Helios 44M-4 58mm f1:2 mounting trouble jt_cph_dk Pentax SLR Lens Discussion 7 12-09-2011 01:45 PM
mounting sigma lens to pentax kx mikesgarage Troubleshooting and Beginner Help 7 12-06-2011 01:12 AM



All times are GMT -7. The time now is 08:14 AM. | 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