Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-22-2010, 07:55 AM   #1
Senior Member
fourmiX's Avatar

Join Date: Jul 2008
Location: France
Photos: Gallery
Posts: 137
Metering troubles with K7

Hi,

Got a problem with a K7:

I think i have a metering trouble:

In Av mode, whereas the light condition and the aperture : it always go at 1/8000

In Tv mode: always the small aperture of the lens...

In P mode: always 1/8000 and smallest aperure.

So my pictures are all DARK...



any idea ?

06-22-2010, 08:02 AM   #2
Pentaxian
aleonx3's Avatar

Join Date: Jul 2007
Location: Brampton, Ontario
Photos: Gallery | Albums
Posts: 3,888
I would reset the customs function first if it clears anything you might have set incorrectly by mistake.
06-22-2010, 08:04 AM   #3
Inactive Account




Join Date: Aug 2008
Location: Michigan, USA
Photos: Gallery | Albums
Posts: 7,484
QuoteOriginally posted by fourmiX Quote
Hi,

Got a problem with a K7:

I think i have a metering trouble:

In Av mode, whereas the light condition and the aperture : it always go at 1/8000

In Tv mode: always the small aperture of the lens...

In P mode: always 1/8000 and smallest aperure.

So my pictures are all DARK...



any idea ?
Sounds like you are shooting straight into the sun (that's the only time I get those settings on mine).

I doubt it matters but does it do this with All lenses?

Where is your ISO set?

Have you set the camera to M and tried setting the aperture and speed manually by using the meter to set your exposure?

06-22-2010, 08:04 AM   #4
Veteran Member
RBellavance's Avatar

Join Date: Nov 2006
Location: Near Montréal, Canada
Photos: Gallery
Posts: 1,716
What is you ISO setting ?

06-22-2010, 08:10 AM   #5
Senior Member
fourmiX's Avatar

Join Date: Jul 2008
Location: France
Photos: Gallery
Posts: 137
Original Poster
Same trouble at all iso's settings.

In green mode also, it goes at 1/8000 and smallest aperture.

You're right, it's like we are straight on the sun or big light...but it's not the case !

Tested with many lens, same problem...

Test in M mode, when i press the green button -> 1/8000 and smallest aperture...

I've reset the K7...same troubles...

Last edited by fourmiX; 06-22-2010 at 08:24 AM.
06-22-2010, 08:26 AM   #6
Site Supporter
enoeske's Avatar

Join Date: Jul 2009
Location: Surprise, Az
Photos: Gallery
Posts: 1,925
What lens?

Sounds like you are using a manual aperture lens (K or M series). These do not stop down in Av, Tv, Sv, or Green modes. They will meter wide open and in auto modes like these, shoot wide open. You need to be in M mode and set the aperture yourself.
06-22-2010, 08:30 AM   #7
Senior Member
fourmiX's Avatar

Join Date: Jul 2008
Location: France
Photos: Gallery
Posts: 137
Original Poster
Lens:

Da*55
Fa*200 macro
Zeiss 85 ZK
Da*50-135
...

All on the A set.


I precise that it's nor a constant trouble.
We can take 4 or 5 shoots normally (at 1/250 and f/2.8 iso 200 for example)
and without changing anything, the meter cell goes crazy and goes at 1/8000 or smallest aperture...
:/
06-22-2010, 08:58 AM   #8
Veteran Member
RBellavance's Avatar

Join Date: Nov 2006
Location: Near Montréal, Canada
Photos: Gallery
Posts: 1,716
Sounds like it's defective, unfortunately. You'll most likely have to send it in for service.

06-22-2010, 09:57 AM   #9
Pentaxian
RonHendriks1966's Avatar

Join Date: Jan 2009
Photos: Gallery
Posts: 8,714
Sounds like a technical problem. Only thing that it also could be is a problem with the accu, so the energy isn't good. I would send it in for service.
06-22-2010, 11:19 AM   #10
Senior Member
fourmiX's Avatar

Join Date: Jul 2008
Location: France
Photos: Gallery
Posts: 137
Original Poster
ok...

Thanks for your advices.

I would phone the seller (4 year warranty)and explain the trouble.
I hope that he would accept a exchange ?
06-22-2010, 04:59 PM   #11
Inactive Account




Join Date: Aug 2008
Location: Michigan, USA
Photos: Gallery | Albums
Posts: 7,484
QuoteOriginally posted by fourmiX Quote
Same trouble at all iso's settings.

In green mode also, it goes at 1/8000 and smallest aperture.

You're right, it's like we are straight on the sun or big light...but it's not the case !

Tested with many lens, same problem...

Test in M mode, when i press the green button -> 1/8000 and smallest aperture...

I've reset the K7...same troubles...
It certainly sounds as if the camera is defective.

When I suggested M mode, I meant set the shutter speed and aperture with the dials. When you press the green button, you are still Auto Metering.

08-09-2010, 04:26 PM   #12
Senior Member
HEEGZ's Avatar

Join Date: Jun 2010
Location: Missouri
Photos: Albums
Posts: 258
Just wanted to report that I am having the same issue. It is fairly erratic when it occurs, sometimes on the first shot, sometimes 100 shots later. Basically the camera meters for 1/8000 and the smallest aperture size, as if pointing at the sun. Swapping lenses and environments makes no difference on when it occurs.

Only work around is to switch to Live View mode and hit the green button, works more than 50% of the time, though the problem usually returns. The other method is to simply guess the exposure and then bracket your way in to a nicely balance histogram.

Using both of these methods I was able to take images on my first big trip with my new K-7. I'm really frustrated that I got a lemon though...

Since getting home from my trip today the problem has not resurfaced. I'm afraid it may return the next time I have a lot of photo taking planned.
08-24-2012, 03:58 AM   #13
New Member




Join Date: Aug 2012
Posts: 2
I am having the same issue too.It occurs occasionally. When I sent it to maintenance services in china area several times,they said they couldn't detect any problems. It is so frustrated. I made them sent it to headquarters in japan for further inspection and maintenance.Hope problem can be solved.
08-25-2012, 10:13 AM   #14
Veteran Member




Join Date: Apr 2008
Location: Pittsburgh, PA
Photos: Gallery | Albums
Posts: 667
I am wondering if it has to do with the way metering is set. I sometimes have the opposite problem with weddings - my K5 overexposes. It is because it is trying to meter the groom's black tux to 18% gray. I generally know what the settings should be, so shooting manual or changing the metering mode fixes this issue. Is there something white in the scene that your camera could be trying to make 18% gray and therefore underexposing your images?
08-25-2012, 02:07 PM   #15
Pentaxian




Join Date: Mar 2010
Location: Frankfurt am Main
Posts: 1,094
It sounds as if there was a bad contact somewhere internally. Could be the mode wheel or one of the other wheels.

With the ME Super this was a very common effect when dirt had entered the area beneath the ISO/EV compensation wheel.
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, camera, dslr, k7, mode, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
New DSLR K-x troubles MelAllsop Pentax DSLR Discussion 7 12-17-2009 12:47 PM
Troubles but cool... metroeloise Post Your Photos! 5 08-23-2009 12:51 PM
50-135mm troubles or is it me? branphlake Pentax SLR Lens Discussion 4 08-17-2009 10:30 PM
Evilbay troubles Pwn4g3_P13 General Talk 26 08-17-2009 03:53 PM
Troubles with inspiration Kim Post Your Photos! 6 03-12-2008 02:07 AM



All times are GMT -7. The time now is 12:57 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