Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
07-15-2010, 10:42 PM   #1
Senior Member

Join Date: May 2010
Location: long island
Posts: 135
K-7 automatic Lens Correction?

hi guys, guick question, does the K-7 provide Distortion and chromatic aberration correction for 3rd party lenses?

dpreview says that it provides correction for DA and DFA lenses...


07-15-2010, 11:37 PM   #2
Veteran Member
steve1307's Avatar

Join Date: Mar 2010
Location: Sydney
Photos: Gallery | Albums
Posts: 1,129
Not for 3rd party lenses, no.

It works with all DA, (DAL), DA* and DFA lenses, but distortion correction is disabled for the DA10-17 fisheye obviously.

K-7 Firmware update 1.03 added this function for the FA31,43 and 77 Ltds.
I dont think it works for the FA50 1.4

Notably it does work for the Pentax DA18-250 but it does not work for the identical Tamron 18-250, which has a pretty hefty barrel at 18mm.

Would partially explain the premium price on the Pentax on the used market.
07-15-2010, 11:44 PM   #3
Veteran Member

Join Date: Dec 2007
Posts: 923
Definitely does not work on my Tamron and Sigma lenses.
Anyway, I normally switch off both Lens Distortion and CA correction, because it slows down JPEG image processing too much.
Most good PP software can do a decent job with correcting these two issues, so I've hardly found it necesary to turn on the in-camera function.
07-16-2010, 01:49 AM   #4
hcc's Avatar

Join Date: Nov 2009
Location: Brisbane, Australia
Photos: Gallery | Albums
Posts: 3,531
QuoteOriginally posted by kittykat46 Quote
Definitely does not work on my Tamron and Sigma lenses.
Anyway, I normally switch off both Lens Distortion and CA correction, because it slows down JPEG image processing too much.
+ 1
With my DA18-250mm, I started to use the K-7 enabling the lens distortion correction. Now I do not.

I do a lot of dynamic shooting incl. Hi continuous shooting. As a results, I must limit all internal PP during the JPEG production, incl. lens distortion correction.

For the lens distortion correction, Pentax Digital Camera Utility 4 does a reasonable job, but my first choice is PTLens. An excellent well-priced software {}: highly recommended.

In summary: with both Pentax and 3rd party lenses, I do not enable lens distortion correction. I use PDCU 4 for light corrections and PTLens when I want a precise job.

Last edited by hcc; 07-16-2010 at 01:49 AM. Reason: Typos

  • 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, correction, dslr, k-7, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Problem with automatic lens tfischer Troubleshooting and Beginner Help 10 03-25-2010 05:18 PM
Pentax K-7 'automatic horizon correction' feature ! Confused Pentax DSLR Discussion 5 06-17-2009 03:45 AM
Automatic lens distortion correction example PentaxPoke Pentax SLR Lens Discussion 6 02-03-2009 05:39 PM
automatic focus problems 16-45 lens vladimir Pentax SLR Lens Discussion 1 10-07-2007 08:17 PM
Sakar 50mm 1.7 automatic lens? wipearl Pentax SLR Lens Discussion 0 02-17-2007 04:57 AM

All times are GMT -7. The time now is 12:27 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]