Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
11-02-2015, 08:26 AM   #1
New Member

Join Date: Nov 2015
Posts: 5
K5iis disable exposure lock (AE-L)

I brought my K5iis to Mt Fuji this Sept with some patches of heavy rain. I though K5iis was water proof but sadly I was wrong. After drying, the K5iis is now exposure locked. Whenever I switch on the camera, the camera is exposure locked after a spit second. (with asterisk in viewfinder)

Also the green button is not responding (as if it is always depressed) This is confirmed by, when I play photos and use dial wheel to zoom, the picture is always zooming out.

I have disassembled the camera top and back, and cleaned almost every circuit and button I can see with contact cleaner. The problems still exist.

So I have taken it to the official repairer of Pentax in my place, The agent said the main board needs replacement, but the quotation costs more than the camera at about $400. This is obviously beyond economic repair so I am preparing to live with the exposure lock problem.

For the M42 or non-A manual lens, I can use M mode and optical preview knob to perform auto metering once. This works fine with some habit changes.

However, there is the problem for autofocus lens. Once the exposure is locked, I cannot get a different exposure setting even I change the combination of shutter speed / ISO / Aperture in Any mode , because they will auto adjust each other to maintain same exposure. I can only switch off and on the camera. Also, the optical preview knob cannot perform metering but only tell whether the exposure is over or under by the gradient bars.

I hope some experienced user can lead me some workarounds:
1) is there a way to disable exposure lock in k5iis
2) or for autofocus lenses, it there any way I can change actual exposure even exposure is locked?

Your help much appreciated.

11-02-2015, 09:49 AM   #2
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 27,415
Welcome to the Pentax Forums!

Sorry about your broken camera. If the main board is shot, it is anyone's guess just what any of the controls is doing anymore. I can't offer any specific advice, but perhaps some other users have special knowledge.

11-02-2015, 04:58 PM   #3
Wingincamera's Avatar

Join Date: Oct 2012
Location: Spanaway, WA. USA
Photos: Gallery | Albums
Posts: 571
Sorry to hear about the problem. I can't comment on the repair, but do have a question. Were you using a WR lens with the camera? If not, that's where the water & moisture got in. I had both the K-5 II and now my K-S2 out in some serious rain without any problems, but I was using a Pentax WR lens.
11-02-2015, 10:53 PM   #4
Loyal Site Supporter
Canada_Rockies's Avatar

Join Date: Nov 2007
Location: Sparwood, BC, Canada
Photos: Gallery | Albums
Posts: 9,533
My K10D had this problem for a while. The top of the camera had an almost microscopic crack right next to the AE-L button. Mine would come on with the camera, but pressing the button would turn it off. I had Mr. Pentax fix it - for C$300+

11-03-2015, 07:17 AM   #5
Loyal Site Supporter
Bengan's Avatar

Join Date: Nov 2012
Location: Stockholm
Photos: Gallery | Albums
Posts: 369
I would do a full factory reset and if that doesn't help, a firmware relode Before giving up
11-03-2015, 08:39 AM   #6
New Member

Join Date: Nov 2015
Posts: 5
Original Poster
Wingincamera is right I was not using a WR lens so that may be the problem but I know it too late now.
I got firmware 1.07 reloaded with no improvement. As to factory reset, I have performed it in the menu also without improvement. Would there be any other way to do the full reset?
11-03-2015, 10:36 AM   #7
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 27,415
QuoteOriginally posted by sansfin Quote
Would there be any other way to do the full reset?
There is a second option to clear the custom settings. The steps to do a full reset are detailed on page 296 of the user manual (English version). I am not sure what benefit it might do given that your camera has physical damage, but there is no harm in trying.

11-29-2015, 12:43 AM   #8
New Member

Join Date: Nov 2015
Posts: 5
Original Poster
Today, when I was playing with debug mode with PKTether, the camera works normally again. The exposure lock now functions correctly. I don't know whether it is because PKTether has done something, or the recent dry weather which disperses the moisture inside. Now my beloved camera revived! Thank you all of your advice.

11-29-2015, 01:00 AM   #9
Loyal Site Supporter

Join Date: Nov 2013
Location: Alabama
Posts: 2,450
It lives!!

Happy to hear that your camera is feeling better.

  • 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!
ae-l, auto, autofocus, camera, change, exposure, exposure lock, green button, k5iis, k5iis disable exposure, knob, mode, pentax help, photography, switch, troubleshooting
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
disable or lock exposure compensation? konraDarnok Ricoh GR 3 11-25-2014 12:52 PM
AE-Lock and AF-Lock on the Pentax K-3 Mapleleaf-Mick Pentax DSLR Discussion 3 11-04-2014 03:43 PM
k-7 "white balance lock" with AE-L mboehm Pentax DSLR Discussion 7 10-21-2013 08:03 PM
K100D link/lock of AE-L and AF atnbirdie Pentax DSLR Discussion 15 03-15-2007 06:06 PM
AE-L exposure lock stopping down fevbusch Pentax DSLR Discussion 8 03-02-2007 12:15 PM

All times are GMT -7. The time now is 03:00 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]