Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
05-27-2009, 12:18 PM   #1
Veteran Member




Join Date: Mar 2008
Location: Ontario, Canada
Photos: Gallery
Posts: 366
Pentax-M help needed

I bought a Pentax-M 50mm lens about 3 years ago and from what I can remember it worked just fine. Now when I have the lens in my hand and I turn the aperture ring, I can see the aperture opening and closing just fine. But when I put the lens on the body, the aperture opens up at the widest limit and I can't stop it down by turning the aperture ring. I don't know what I'm doing wrong. Can you help please? I want to give it to a friend as a gift. i encouraged him to buy a K10D. Thanks.

05-27-2009, 12:28 PM   #2
Pentaxian




Join Date: Feb 2009
Location: Alameda, CA
Posts: 3,198
QuoteOriginally posted by Stratario Quote
Now when I have the lens in my hand and I turn the aperture ring, I can see the aperture opening and closing just fine. But when I put the lens on the body, the aperture opens up at the widest limit and I can't stop it down by turning the aperture ring.
That's normal behavior. The lens remains wide open so you can focus easier. It will close down just before and during the exposure.

Now, set the camera mode to M and the aperture ring of the lens to f/16. Face the camera and look at the lens. Hit the green button or turn on DOF review (I assume you leave it the the default setting of DOF review), you should see the lens closing down.

For more info, read this thread.
05-27-2009, 12:38 PM   #3
Veteran Member




Join Date: Mar 2008
Location: Ontario, Canada
Photos: Gallery
Posts: 366
Original Poster
Thanks. It works as you described.
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, fine, k-mount, lens, pentax lens, pentax-m, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
pentax k-m a little help needed deeps_10 Pentax DSLR Discussion 10 09-01-2010 03:55 AM
Pentax software needed Nomad Troubleshooting and Beginner Help 4 12-26-2009 12:41 PM
Pentax AF 540FGZ help needed bethtphotos Pentax Camera and Field Accessories 15 10-09-2009 07:35 PM
Pentax Newbie. Help needed kinsale Troubleshooting and Beginner Help 15 07-28-2008 05:54 PM
Pentax m*300 f4-HELP NEEDED jonny1986 Pentax SLR Lens Discussion 8 03-05-2008 11:56 AM



All times are GMT -7. The time now is 01:57 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