Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-04-2011, 03:32 PM   #1
New Member




Join Date: Jul 2010
Location: Alabama
Posts: 8
K-x @ 1/60 has black stripe

I'm not sure why but when i use my k-x in full manual, with or without a flash, if im shooting at 1/60th of a second, there is a dark line on the bottom of the exposure.
This line is about 1/3rd of the frame. its just a dark under exposed section of the frame. i dont know how else to describe it. at 1/50th its fine, and 1/80 is also fine. it only does it at 1/60th/


Also tried different lenses to make sure it was the body. any suggestions? Is this the case with any other k-x's?

02-04-2011, 03:53 PM   #2
Site Supporter
enoeske's Avatar

Join Date: Jul 2009
Location: Surprise, Az
Photos: Gallery
Posts: 1,908
can you post one of the offending images to help us diagnose the issue? ideally one without flash and one with flash
02-04-2011, 03:55 PM   #3
Veteran Member
KxBlaze's Avatar

Join Date: Feb 2010
Location: California
Photos: Gallery
Posts: 1,594
Is it there when you view the pictures on a computer or only when you view it on the camera LCD? I have heard others on here say they have had similar problems but do not remember the solution. I suggest doing a search for those threads.
02-05-2011, 05:32 PM   #4
New Member




Join Date: Jul 2010
Location: Alabama
Posts: 8
Original Poster
It is there only when i use a flash. I use a AF540FGZ and the first few exposures dont have it. here are a couple samples.

<a href="http://smg.photobucket.com/albums/v78/less-than-zero/?action=view&amp;current=1-601of2.jpg" target="_blank"><img src="http://img.photobucket.com/albums/v78/less-than-zero/1-601of2.jpg" border="0" alt="Photobucket"></a>

<a href="http://smg.photobucket.com/albums/v78/less-than-zero/?action=view&amp;current=1-602of2.jpg" target="_blank"><img src="http://img.photobucket.com/albums/v78/less-than-zero/1-602of2.jpg" border="0" alt="Photobucket"></a>

02-06-2011, 02:18 AM   #5
Veteran Member




Join Date: Nov 2010
Location: Fife, Scotland
Posts: 834
What focal length? It looks like the lens hood is shading the flash from the lower part of the scene.
02-07-2011, 08:20 PM   #6
New Member




Join Date: Nov 2009
Location: Michigan
Posts: 21
Sync problem

crimespree, I have the same problem but only when I use my k-x and 360 with radio triggers(FlashWave). I do not have a problem when I use P-TTL on the hot shoes. Are you using P-TTL?
02-07-2011, 08:23 PM   #7
Site Supporter
enoeske's Avatar

Join Date: Jul 2009
Location: Surprise, Az
Photos: Gallery
Posts: 1,908
If you are using wireless radio triggers, its quite possible that your triggers aren't up to the task of syncing at 1/180. You may need to lower the shutter speed a bit, try 1/120 or 1/80 if the ambient isn't a problem.
02-07-2011, 08:49 PM   #8
Pentaxian
bobmaxja's Avatar

Join Date: Mar 2010
Location: Laval, Quebec Canada
Posts: 1,724
See this Video, they will explain your black section on your photo

http://www.youtube.com/watch?v=hvZ6VujbhjM&feature=player_embedded#

02-08-2011, 02:56 PM   #9
Pentaxian
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 15,361
I had an issue like this with my K10D which had the stripe getting wider and wider as the shutter speed increased.

Ultimately they replaced the shutter mirror and lens mount.

Although I can't prove it, and don't recall dropping the camera, I am sure that is what happened.

The trailing curtain was moving incorrectly
02-08-2011, 03:00 PM   #10
Pentaxian
bobmaxja's Avatar

Join Date: Mar 2010
Location: Laval, Quebec Canada
Posts: 1,724
If you use flash and you increase the shutter speed, the black stripe will grow. Normal the flash sync on Pentax is max at 1/180. Anything over 1/180 will show black stripe
Nothing wrong with the curtain
Look at the video link I attached.
02-08-2011, 03:04 PM   #11
Site Supporter
enoeske's Avatar

Join Date: Jul 2009
Location: Surprise, Az
Photos: Gallery
Posts: 1,908
QuoteOriginally posted by bobmaxja Quote
If you use flash and you increase the shutter speed, the black stripe will grow. Normal the flash sync on Pentax is max at 1/180. Anything over 1/180 will show black stripe
Nothing wrong with the curtain
Look at the video link I attached.
the camera doesn't trigger the flash at speeds above 1/180th at all, so no worry about exceeding the max sync speed.

still looks like a trigger sync issue -- the triggers aren't able to keep up with the camera max sync speed. Try some fresh new batteries in the flash, commander and receiver.
02-08-2011, 03:31 PM   #12
Pentaxian
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 15,361
QuoteOriginally posted by bobmaxja Quote
If you use flash and you increase the shutter speed, the black stripe will grow. Normal the flash sync on Pentax is max at 1/180. Anything over 1/180 will show black stripe
Nothing wrong with the curtain
Look at the video link I attached.
QuoteOriginally posted by enoeske Quote
the camera doesn't trigger the flash at speeds above 1/180th at all, so no worry about exceeding the max sync speed.

still looks like a trigger sync issue -- the triggers aren't able to keep up with the camera max sync speed. Try some fresh new batteries in the flash, commander and receiver.
guys

read the OP's post.

he says with or without flash.

Sounds like a sticking curtain.
02-08-2011, 03:35 PM   #13
Site Supporter
enoeske's Avatar

Join Date: Jul 2009
Location: Surprise, Az
Photos: Gallery
Posts: 1,908
QuoteOriginally posted by Lowell Goudge Quote
guys

read the OP's post.

he says with or without flash.

Sounds like a sticking curtain.
he seems to have amended his comments later...

QuoteOriginally posted by crimespree Quote
It is there only when i use a flash. I use a AF540FGZ and the first few exposures dont have it. here are a couple samples.
when you say the first few frames don't have it, are you shooting in bursts? Are you letting the flash recycle fully?
02-08-2011, 03:52 PM   #14
Pentaxian
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 15,361
QuoteOriginally posted by enoeske Quote
he seems to have amended his comments later...



when you say the first few frames don't have it, are you shooting in bursts? Are you letting the flash recycle fully?
Oops I missed that

If it is flash and he is set to trailing curtain sync and has the flash at full power then the flash duration exceeds the time the shutter is fully open. This can also be seen at full power and max sync on leading curtain sync
04-13-2011, 12:27 PM   #15
New Member




Join Date: Jul 2010
Location: Alabama
Posts: 8
Original Poster
Sorry about this lapse in response. It is apparently a trigger based issue. I can however shoot at 1/180 and all over the shutter speed board with no weirdness in exposure. ONLY at 1/60th of a second. and only with a wireless trigger.
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!
frame, k-x, line, pentax help
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Black Stripe When Viewing DNG in Picassa VelvetFoot Troubleshooting and Beginner Help 16 01-28-2011 07:28 AM
Red stripe across frame why? telfish Pentax DSLR Discussion 7 03-20-2010 07:03 PM
Macro Stripe on Petal shooz Photo Critique 2 02-16-2010 10:55 PM
Stripe on K20D images offertonhatter Pentax DSLR Discussion 7 04-03-2009 06:16 PM
Bees... black stripe or yellow stripe? YJD Post Your Photos! 7 09-08-2008 01:11 PM



All times are GMT -7. The time now is 12:19 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