Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
07-24-2015, 01:21 AM   #1
New Member

Join Date: Jul 2015
Posts: 4
K5II overexposure on modern lensens only

A weird problem with my k5II is that it tends to overexpose massively with my modern lenses, which are the kitlens, DA35/f 2.4 and a DA40/2.8 i borrowed. I almost exclusively shoot in munual mode using the green button to set exposure if i need it set quickly. Interestingly, it works great when i use pentax-M lenses or m42s, which makes me think its a software problem rather than a mechanical one. Any suggestions here, as for theres nothing but to guesstimate exposure time and aperture


07-24-2015, 03:45 AM   #2
Senior Member

Join Date: Dec 2013
Posts: 223
set your aperture to f22 or higher and shutter to 1 second look into the lens and press the shutter button to see if the aperture is working
07-24-2015, 04:08 AM   #3
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 15,893
What is the level of over exposure? You should check the linearity of the mechanism. You can do this by setting aperture with the dial and letting the camera set shutter speed, and the measure the greyscale value at each setting. My tamron 28-75/2.8 has an error in aperture which leads gradually to a +1 stop over exposure when at F32. It's perfect at F2.8

  • 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!
camera, exposure, k5ii, k5ii overexposure, lenses, pentax help, photography, troubleshooting
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Modern K-Mount Lenses on Film SLRs? Biro Pentax Film SLR Discussion 12 12-01-2014 06:02 PM
Total overexposure on Star Trail attempts Michael Piziak Pentax DSLR Discussion 10 06-02-2014 06:40 PM
Fujica on K5II ? orionschwert Pentax SLR Lens Discussion 4 01-14-2014 07:52 PM
Modern flash on old pentax K2 SRJM Flashes, Lighting, and Studio 4 10-04-2013 11:39 AM
Overexposure on snow kluvi Pentax K-5 30 02-25-2012 05:18 PM

All times are GMT -7. The time now is 10:08 AM. | 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]