Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version 1 Like Search this Thread
11-06-2013, 11:15 AM   #1
New Member




Join Date: Nov 2013
Posts: 8
Is this a sensor issue? Not sure what to do

Hi all,

New pentax person here. I have been enjoying the k30 bought earlier in may. However I seem to be having an issue now. I'm not sure why but last weekend i noticed there was a line across the top of my photos, as If that part is being way more overexposed than others.

It rained a few weeks ago and I had the camera in my knapsack, at the bottom of the bag. But the bottom was definitely wet, and the camera was lying lense up, lcd screen down, I know the k30 is weatherproof but that's the only thing I can think of, I had my 50mm on.

Here are two pics inside, and one from my photo shoot with a friend. As you can see, its not super noticeable as long as there is plenty of light. For the time being I will just have to crop it out or play with exposure setting in lightroom

Any ideas guys? Does anyone know what possible could have happend? And how does one rectify this?

J

Attached Images
View Picture EXIF
PENTAX K-30  Photo 
View Picture EXIF
PENTAX K-30  Photo   
11-06-2013, 11:23 AM   #2
Pentaxian
johnyates's Avatar

Join Date: Aug 2011
Location: Saskatoon, SK
Photos: Albums
Posts: 1,345
Does this happen with all lenses, or just the 50mm?
11-06-2013, 11:24 AM   #3
New Member




Join Date: Nov 2013
Posts: 8
Original Poster
Both the 50mm and the 18-55 kit lens
11-06-2013, 11:30 AM   #4
Pentaxian
johnyates's Avatar

Join Date: Aug 2011
Location: Saskatoon, SK
Photos: Albums
Posts: 1,345
I would send the camera for repair.

11-06-2013, 11:35 AM   #5
New Member




Join Date: Nov 2013
Posts: 8
Original Poster
Sheizze
11-06-2013, 11:44 AM   #6
Veteran Member




Join Date: Oct 2013
Posts: 402
it kinda looks like shutter lag.
Does it do it in full auto also?
Make sure your are not at firmware 1.03 (on thier website Ricoh has admitted that 1.03 caused some instability) try 1.05, if you haven't already. see if that helps.
Also, Try a factory settings reset.
If that doesn't help
I hate to say this.... but if its still under warranty . Send it in with samples.

Last edited by OldNoob; 11-06-2013 at 11:51 AM.
11-06-2013, 12:07 PM - 1 Like   #7
Veteran Member
Na Horuk's Avatar

Join Date: Feb 2012
Location: Slovenia, probably
Photos: Gallery | Albums
Posts: 11,186
Wait wait. Are you sure this isnt happening due to artificial light and fast shutter speed? You see, the camera can be faster than the light bulb's frequency, and cause dark lines. We had threads about that issue before, where people thought their camera was broken, but it was performing exactly as normal. Key factors are shutter speed and the type of light bulb used.
So.. remove the battery, charge it up, leave it outside the camera for a couple hours, update the firmware, and then try the camera in daylight.
Also, make sure the camera is dry - don't want any water splashing in there! I think you can find advice on how to dry a camera off after something like that. Better safe than sorry and all.

11-06-2013, 12:40 PM   #8
New Member




Join Date: Nov 2013
Posts: 8
Original Poster
I've noticed there is no issue in video mode, no overexposed lines?

I am charging the battery, and will update to new firmware and get back to you guys.
11-06-2013, 12:46 PM   #9
New Member




Join Date: Nov 2013
Posts: 8
Original Poster
Ah I see why, the sensor records in movie ratio, so you can't see the top part during movie mode. Dang.
11-06-2013, 01:09 PM   #10
Otis Memorial Pentaxian
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 42,007
Shoot the blank sky at various shutter speeds both above and below the flash sync speed. If it is shutter, there should be some variability in the light band with shutter speed. I would be really surprised if this were a shutter issue. The tapering towards the edges is the first clue.

Moisture condensed on the sensor? You should visually inspect the mirror box for moisture as well as the sensor itself (open shutter in B mode with lens off).


Steve
11-06-2013, 01:46 PM   #11
New Member




Join Date: Nov 2013
Posts: 8
Original Poster
I will go outside in a bit and take some pics of the sky. I set it on bulb and looked at the sensor, have a look, this might be the culprit? Is that line at the top, maybe it was always there it seems to be some sort of chemical adhesif maybe line placed there at the top of the sensor, but for whatever reason it is now allowing light to shine through where it didn't before?
Attached Images
View Picture EXIF
IPhone 5  Photo 
11-06-2013, 03:25 PM   #12
Veteran Member




Join Date: Oct 2013
Posts: 402
i think its best to send it in. i could be just seeing an optical illusion, but there seems to be a line across the top of the sensor. In addition, my sensor reflects in an amber color which im not seeing in your photo. odd

Last edited by OldNoob; 11-06-2013 at 03:30 PM.
11-06-2013, 03:39 PM   #13
Veteran Member




Join Date: Nov 2006
Location: md-usa
Photos: Gallery | Albums
Posts: 2,580
looks like the shutter going bad to me

Here's my 1dsii shutter failure (got it fixed now)
11-06-2013, 04:08 PM   #14
New Member




Join Date: Nov 2013
Posts: 8
Original Poster
Wow, looks like that is the problem then. Thanks for the picture at least I have an idea.

Jerry
11-06-2013, 04:08 PM   #15
New Member




Join Date: Nov 2013
Posts: 8
Original Poster
Its under wanrranty, I'm in Canda, I can send it to pentax then? Or is it better to just go to a camera shop? (sorry for the newbie questions)
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!
bottom, camera, issue, k-30, k-50, k30, pentax k30, pentax k50

Similar Threads
Thread Thread Starter Forum Replies Last Post
Just got my new K-30. What should I check to make sure is not DOA? jrcastillo Pentax K-30 & K-50 3 07-18-2013 08:05 PM
I'm not sure what to do with my hands... LBo Welcomes and Introductions 5 11-09-2012 09:41 AM
I'm not sure what I've even lookng for- What is this called? Sew-Classic Digital Processing, Software, and Printing 4 01-11-2010 03:23 PM
one picture 3 ways - not sure what to do timbo13 Post Your Photos! 10 11-19-2008 07:16 PM



All times are GMT -7. The time now is 01:34 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