Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
12-12-2013, 09:14 AM   #16
Senior Member




Join Date: Aug 2013
Photos: Gallery
Posts: 150
Original Poster
done this nothing happens

12-12-2013, 10:01 AM   #17
Pentaxian
Na Horuk's Avatar

Join Date: Feb 2012
Location: Slovenia, probably
Photos: Gallery | Albums
Posts: 10,825
I would definitely also try the metal foil. Put it between the lens and mount (careful not to get any flakes inside the camera!) to test if that helps. Do this before more drastic measures. Just make sure the tin foil you use is conductive, otherwise the test is pointless. I think there are some threads on "shorting the contact pins"
12-12-2013, 10:58 AM   #18
Loyal Site Supporter
monochrome's Avatar

Join Date: Mar 2008
Location: Kirkwood (St. Louis) MO
Photos: Gallery | Albums
Posts: 20,341
QuoteOriginally posted by stevebrot Quote
...should be continuously meter incorrectly. Av metering with M42 lenses is unreliable per the camera manual. Use M mode with auto-iso turned off.

There are a number of threads about M mode metering issues on the K-30, K-50, and K-01 with lenses having non-conductive bases. I have not been able to confirm (don't have the K-30), but if I remember correctly, the solution is to short both the A-contact pin and data pin using thin foil or by sanding off the non-conductive paint/anodizing.


Steve
^^ THIS! (Use the foil method). Applies to a new (fault?) in the programming of the K-01, which is also used in the K30/K50. (The K-30/K50 is essentially a K-01 with a mirror and viewfinder).
12-12-2013, 02:00 PM   #19
Pentaxian
Kozlok's Avatar

Join Date: Jun 2012
Location: Albuquerque
Photos: Gallery
Posts: 1,767
Detailed thread https://www.pentaxforums.com/forums/120-general-technical-troubleshooting/230...g-problem.html

Pentax knows about this problem. I recommend contacting their customer support and complaining to get a firmware fix.

12-12-2013, 02:48 PM   #20
Senior Member




Join Date: Apr 2010
Location: Austin, TX
Photos: Albums
Posts: 152
QuoteOriginally posted by Kozlok Quote
Detailed thread https://www.pentaxforums.com/forums/120-general-technical-troubleshooting/230...g-problem.html

Pentax knows about this problem. I recommend contacting their customer support and complaining to get a firmware fix.
Ok, so it is a K30 bug! Does anybody know why "AV" mode metering (for m42) is so much less reliable than the green button for manual K-mount (M or A) lenses? I would think metering is metering and all modes would be the same, but AV mode was off by approximately -1 stops, for my 55mm M42 TAK, F/1.8. Live mode was good, and green button was spot on for normal K-mount manual lenses.
- Sheldon
12-12-2013, 08:12 PM   #21
Senior Member




Join Date: Aug 2013
Photos: Gallery
Posts: 150
Original Poster
QuoteOriginally posted by Kozlok Quote
Detailed thread https://www.pentaxforums.com/forums/120-general-technical-troubleshooting/230...g-problem.html

Pentax knows about this problem. I recommend contacting their customer support and complaining to get a firmware fix.
ive seen your post. is your k30 now fixed with your super tak 55 metering in M mode?
12-13-2013, 08:43 AM   #22
Pentaxian
Kozlok's Avatar

Join Date: Jun 2012
Location: Albuquerque
Photos: Gallery
Posts: 1,767
Nope. Last firmware still didn't fix this.
12-13-2013, 02:45 PM   #23
Senior Member




Join Date: Aug 2013
Photos: Gallery
Posts: 150
Original Poster
QuoteOriginally posted by Kozlok Quote
Nope. Last firmware still didn't fix this.
Is this applicable to all pentax k30? Or just selected units?

12-13-2013, 04:13 PM   #24
Pentaxian
Kozlok's Avatar

Join Date: Jun 2012
Location: Albuquerque
Photos: Gallery
Posts: 1,767
QuoteOriginally posted by rp_dxn Quote
Is this applicable to all pentax k30? Or just selected units?
I wrote to Pentax, they indicated they tested it out and it was all of them.
12-13-2013, 06:43 PM   #25
Senior Member




Join Date: Aug 2013
Photos: Gallery
Posts: 150
Original Poster
I read a thread here that he fixed his k30 by just turning auto iso off in manual mode. We have a very similar problem. In liveview, the green button works but n viewfinder, it doesnt work.. im geting my 2nd k30 this day and ill try it with an outdated firmware
12-13-2013, 06:45 PM   #26
Senior Member




Join Date: Aug 2013
Photos: Gallery
Posts: 150
Original Poster
Using it in aperture priority mode seems to work but metering is not reliable. Gettin kinda underexposed shots, you need compensate from time to time
12-18-2013, 09:53 AM   #27
New Member




Join Date: Dec 2013
Posts: 9
QuoteOriginally posted by rp_dxn Quote
Using it in aperture priority mode seems to work but metering is not reliable. Gettin kinda underexposed shots, you need compensate from time to time
Hello, i can confirm the problem its related to the electric contacts, i just received my k-30 and was a little dissapointed as the problem described was identical to my camera's behaviour.
But as i tried my Voigtlander Color Ultron 50mm 1.8 and voila! the green button metering was working as intended (the lens has metallic, conductive back).
Attached Images
 
12-19-2013, 01:40 PM   #28
Senior Member




Join Date: Aug 2012
Location: Doylestown, PA
Posts: 200
QuoteOriginally posted by tpetris Quote
Hello, i can confirm the problem its related to the electric contacts, i just received my k-30 and was a little dissapointed as the problem described was identical to my camera's behaviour.
But as i tried my Voigtlander Color Ultron 50mm 1.8 and voila! the green button metering was working as intended (the lens has metallic, conductive back).
Voigtlander's are made in Singapore?!
12-19-2013, 01:48 PM - 1 Like   #29
Veteran Member
mrNewt's Avatar

Join Date: Nov 2011
Location: ON, RH
Posts: 2,170
Manual mode and "sunny 16 rule" - best reliable tool ever .
12-20-2013, 04:50 AM   #30
New Member




Join Date: Dec 2013
Posts: 9
QuoteOriginally posted by thornburg Quote
Voigtlander's are made in Singapore?!
Yeah, made in Singapore, same lens aka Carl Zeiss Planar 50/1.8. Made for Rollei or Voigtlander (m42) cameras.
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, button, k-30, k-50, k30, lens, lenses, m42, meter, mode, pentax k30, pentax k50
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help: A50 1.7 not working properly in manual mode ismaelg Pentax SLR Lens Discussion 4 01-05-2012 09:04 PM
Pentax k-x hotshoe not working in manual mode crimespree Troubleshooting and Beginner Help 6 06-17-2011 05:52 PM
TAV - green button P line NOT WORKING deadprez Pentax K-5 3 05-30-2011 06:29 AM
Why the green button in manual mode? geekette Pentax DSLR Discussion 5 05-05-2011 12:01 PM
[K10D] {Manual Mode} Green Button with flash AVANT Pentax DSLR Discussion 6 07-13-2007 12:34 PM



All times are GMT -7. The time now is 08:48 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