Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-21-2010, 03:25 PM   #1
Forum Member
Timichango's Avatar

Join Date: Feb 2010
Location: Vancouver
Photos: Albums
Posts: 62
K-7 shutter problem... black frame

Hey all, just started experiencing a very strange problem - lately, typically within the first few frames of shooting after the camera has been off for some time, one of my shots will randomly turn out 100% black - all recorded pixel data is perfectly black, and this histogram shows no data captured at any other point.

Subsequent shots with identical camera settings yield properly exposed pictures, and comparison of the exif data between the good and bad images shows identical exif.

My gut feeling is that this is a shutter problem - anyone have any insight into this or advice?

Thanks in advance...!


Edit: I should add that I haven't had the chance to do an extended shoot to determine if this happens mid-shooting, or if it only occurs when the camera is 'cold', but thus far it seems to happen within the first 2-3 frames when the camera is powered on after being idle.

06-21-2010, 03:42 PM   #2
Site Supporter
enoeske's Avatar

Join Date: Jul 2009
Location: Surprise, Az
Photos: Gallery
Posts: 1,888
QuoteOriginally posted by Timichango Quote
Hey all, just started experiencing a very strange problem - lately, typically within the first few frames of shooting after the camera has been off for some time, one of my shots will randomly turn out 100% black - all recorded pixel data is perfectly black, and this histogram shows no data captured at any other point.

Subsequent shots with identical camera settings yield properly exposed pictures, and comparison of the exif data between the good and bad images shows identical exif.

My gut feeling is that this is a shutter problem - anyone have any insight into this or advice?

Thanks in advance...!


Edit: I should add that I haven't had the chance to do an extended shoot to determine if this happens mid-shooting, or if it only occurs when the camera is 'cold', but thus far it seems to happen within the first 2-3 frames when the camera is powered on after being idle.
Does the aperture look okay? Could be stuck closed down all the way.
06-21-2010, 03:45 PM   #3
Veteran Member
wlachan's Avatar

Join Date: Sep 2006
Location: Canada
Photos: Albums
Posts: 2,626
My now sold DS had the same issue because the shutter & mirror were out of sync (I could hear the sound was different). For some unknown reason, it never happened again after I had it run through the "release aging" in the debug mode. It simple fired the shutter for a hundred time by itself.

Last edited by wlachan; 06-21-2010 at 05:06 PM.
06-21-2010, 05:02 PM   #4
Senior Member




Join Date: Apr 2010
Location: California
Photos: Albums
Posts: 122
I have this problem with my 5 year old DS, my guess is that the shutter blades are sticking together (closed) and causing underexposure when they sit for a long period of time. Do you get less underexposure at slower shutter speeds than faster ones? That could also point to the shutter.

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!
camera, data, dslr, exif, frames, k-7 shutter, photography, shots, shutter
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
LX Shutter Problem SOldBear Pentax Film SLR Discussion 4 07-17-2009 05:56 PM
Black Insert on Shutter lock for MX Murphy2004 Pentax Film SLR Discussion 5 05-07-2009 12:41 PM
Super ME Shutter problem johnfin Pentax Film SLR Discussion 5 04-30-2009 08:15 AM
shutter problem andie80 Troubleshooting and Beginner Help 5 03-13-2009 12:54 AM



All times are GMT -7. The time now is 12:24 PM. | See also: NikonForums.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