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07-03-2015, 05:39 AM   #1
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K-50 Sensor Dead?

K-50 Camera 11 months old and I am a newbie amateur taking pictures.

Yesterday when I used the camera with the DA 55-300 lens at a late afternoon very sunny soccer game--all the pictures are "black" no grass or sky and occasionally a neo-orange colored soccer jersey is visible. I shot only on Auto or Scenes mode for action. I did not change any camera menu settings or physical switches on the outside of the camera ---unless something was accidently bumped when I removed the camera from the bag.

When I came home, any pictures I take--even with the flash are mostly "black" with only an occasional object outline visible. I get the same result when using the kit lens 18-55. I have a friend with a k20-D and when I put either of my lens (55-300 or 18-55) on his camera the pictures are fine. This would seem to indicate to me that the k-50 sensor, etc has failed.

Again, the camera is lightly used and has less than 2500 total pictures taken. Of course, I am trying to find my paperwork to determine if my memory is correct and I should have one month of warranty left. I hope to contact Adorama today--though they may be closed for the 4th of July holiday.

Any advice is appreciated as I am in a bit of a "panic" worrying about the camera. Thank you.
JimC

07-03-2015, 05:47 AM   #2
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Try to look into the lens at the aperture while taking a photo
07-03-2015, 05:53 AM   #3
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QuoteOriginally posted by AldaCZ Quote
Try to look into the lens at the aperture while taking a photo
All the pictures are now locked into 5.6 aperture--it never seems to change now. What does this indicate?
07-03-2015, 05:56 AM   #4
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QuoteOriginally posted by Waldo Quote
All the pictures are now locked into 5.6 aperture--it never seems to change now. What does this indicate?
It might be aperture servo problem.
Do you use manual mode?
Have you tried to use FX button as DOF preview and trying to step it down to various apertures and so on how it works? Does it give the same opening for more tries?

07-03-2015, 05:58 AM   #5
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Hi Waldo, try to use another lens, be it manual or AF. If everything comes out ok, then it's probably the lens.
07-03-2015, 06:03 AM   #6
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I have never used the manual mode...Looking for the manual now.

---------- Post added 07-03-2015 at 06:04 AM ----------

I get the same results with the kit lens 18-55 as I do 55-300 with lens I used at the soccer game.

---------- Post added 07-03-2015 at 06:24 AM ----------

AldaCZ--When I place the k-50 in manual mode, it does produce a picture (outside light) rather than the "black" image. But when I switch back to Auto or Scene mode (action) the preview screen is entirely black again. Does this confirm that I have a "servo" problem? Thanks for your kindness to help me. JimC
07-03-2015, 06:38 AM   #7
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QuoteOriginally posted by Waldo Quote
I have never used the manual mode...Looking for the manual now.

---------- Post added 07-03-2015 at 06:04 AM ----------

I get the same results with the kit lens 18-55 as I do 55-300 with lens I used at the soccer game.

---------- Post added 07-03-2015 at 06:24 AM ----------

AldaCZ--When I place the k-50 in manual mode, it does produce a picture (outside light) rather than the "black" image. But when I switch back to Auto or Scene mode (action) the preview screen is entirely black again. Does this confirm that I have a "servo" problem? Thanks for your kindness to help me. JimC
Even if you set the time to a second or several seconds ?is the aperture open? Can you post a picture with exif?

It sounds like the problem. And for the last solution. Try to reset the camera to defaults. It is in custom menus
07-03-2015, 07:07 AM   #8
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Definitely post a photo straight out of camera using the attachment system so we can see the exif. It could be a settings issue, or a problem with the shutter.

If it's the latter, the good news is that you should still be covered under warranty!


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07-03-2015, 07:58 AM   #9
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Two pictures attached; 2211 is manual setting with 55-300 lens. File 2212 is the same picture with the camera settings on Auto. Again, thank you all for your patience and willingness to help me a novice at best. JimC
Attached Images
View Picture EXIF
PENTAX K-50  Photo 
View Picture EXIF
PENTAX K-50  Photo 
07-03-2015, 08:35 AM   #10
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whats your metering on? I mess things up in a hurry forgetting to go back from spot to average
07-03-2015, 08:37 AM   #11
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QuoteOriginally posted by Aaron28 Quote
whats your metering on? I mess things up in a hurry forgetting to go back from spot to average
Multi-segment metering
07-03-2015, 08:53 AM   #12
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QuoteOriginally posted by Waldo Quote
Multi-segment metering
And The exposure compensation ( +/- button next to the shutter) ?
07-03-2015, 08:58 AM   #13
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according to the exif data, the shutter speed is too high for the aperture and iso settings. perhaps a metering issue. doesn't seem to be an issue with aperture servo. the camera is picking the wrong settings for the situation. so either logic error or metering.
07-03-2015, 09:21 AM   #14
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QuoteOriginally posted by AldaCZ Quote
And The exposure compensation ( +/- button next to the shutter) ?
Yes, the exposure compensation button is next to the shutter.
07-03-2015, 09:23 AM   #15
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QuoteOriginally posted by Waldo Quote
Yes, the exposure compensation button is next to the shutter.
No, not where it is, is it set to, perchance, -2.0?
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