Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
09-26-2016, 10:02 PM   #1
Pentaxian
mattb123's Avatar

Join Date: Apr 2010
Location: Colorado High Country
Photos: Gallery
Posts: 7,405
Dark frames

Has anyone seen where you get some black frames like this? I'm thinking I must have a sticky shutter or something. I think it sounded a little different too. It was also cold and damp so that may not have helped. I've never seen this before and have shot in wetter and colder (much colder) conditions without issue.

When I max out the exposure shadows and blacks to the light side I can see a little sliver of image at the top.

This is from my K-3 I bought right when they came out that has a shutter count of 86218 so I'm not sure I want to put much money into it.

Attached Images
   
09-26-2016, 10:24 PM   #2
Pentaxian




Join Date: Feb 2015
Photos: Albums
Posts: 3,224
Can it be reproduced?
09-27-2016, 03:48 AM   #3
Pentaxian
D1N0's Avatar

Join Date: May 2012
Location: ---
Photos: Gallery
Posts: 4,088
I've had this on my K-5. It was a sign of the shutter starting to fail (or some motor driving it). You'll know soon enough when you get only black frames.

---------- Post added 27-09-16 at 12:57 ----------

I'd get this with +5 exposure in lightroom and the whites maxed out:
09-27-2016, 06:27 AM   #4
Pentaxian
photoptimist's Avatar

Join Date: Jul 2016
Photos: Albums
Posts: 1,123
QuoteOriginally posted by mattb123 Quote
When I max out the exposure shadows and blacks to the light side I can see a little sliver of image at the top.
Either:
1) the mirror is not lifting out of the way,
2) the back curtain is closing the instant the front curtain moves, or
3) the front curtain is sticking and the back curtain is pushing it across the frame

09-27-2016, 08:48 AM   #5
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 26,849
QuoteOriginally posted by mattb123 Quote
When I max out the exposure shadows and blacks to the light side I can see a little sliver of image at the top.
I assume you mean at the top of one of the landscape orientation frames. At first, I thought a seriously capped leading curtain might be to blame, but the symptoms do not fit simple capping. What it looks like is premature release of the trailing curtain with that same curtain slowing significantly just shy of the frame edge -- or --- the leading curtain is fully capped with the trailing curtain bouncing at end of travel. Fault could be with the shutter itself or with its controller.


Steve
09-27-2016, 08:54 AM   #6
Pentaxian
mattb123's Avatar

Join Date: Apr 2010
Location: Colorado High Country
Photos: Gallery
Posts: 7,405
Original Poster
Thanks. You are correct in your assumption, Steve. I haven't used the camera since then and I think I missed six frames out of 400 or so, so it isn't a big proportion of shots. At least not yet.

I'm not sure what I'll do about it. Maybe keep an eye out for an inexpensive replacement K-3, K-3 II, or similar. I have the K-3 battery grip so I'd like to be able to continue using that when shooting sports and events.It's still pretty usable but I would be upset to miss an important shot because of it.
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!
dslr, frames, k-3, k3, pentax k-3, shutter
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Dark frames on K-S2 filmamigo Pentax K-S1 & K-S2 73 10-16-2016 11:43 AM
Pentax SMC-DA 14mm f/2.8 ED [IF] Is suddenly recording a dark centre in my frames. aitrus3 Troubleshooting and Beginner Help 13 08-02-2016 07:07 AM
Dark strip moves across frames willskywalker93 Troubleshooting and Beginner Help 26 11-02-2015 07:24 AM
Interesting behaviour with 645D and dark frames Ed Hurst Pentax Medium Format 0 01-21-2013 03:17 AM
Nature Dark, dark skies and dazzling sunlight newmikey Post Your Photos! 4 10-14-2012 10:17 PM



All times are GMT -7. The time now is 05:41 AM. | 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