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03-05-2019, 07:25 PM - 2 Likes   #1
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K50 went black

Brand new to photography and my auto mode is all dark. This happened after the camera hadn't been used for months. How can I verify if this is a setting problem or if it's the aperture solenoid problem...or something else entirely. Thanks in advance for your help!

03-05-2019, 07:45 PM   #2
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QuoteOriginally posted by Lee Clary Quote
Brand new to photography and my auto mode is all dark. This happened after the camera hadn't been used for months. How can I verify if this is a setting problem or if it's the aperture solenoid problem...or something else entirely. Thanks in advance for your help!
Often the aperture control issue does seem to first occur after the camera has been idle for some months. I have copied below a good set instructions for determining if that is the issue in this case
QuoteOriginally posted by stevebrot Quote
The gold standard for diagnosing aperture block failure is to put the camera in M mode (auto ISO off, aperture ring not being used) with aperture set wide open and shutter speed at something slow (e.g. 1-2 seconds). Release the shutter while observing the aperture opening through the front of the lens.* Anything other than the aperture remaining wide open is indication of a problem with the controller. If the problem has been intermittent, it may help to do the test after a period of non-use. Even one failure is significant.

* This method was instrumental in diagnosing the initial wave of aperture block failures on the K-30 and narrowing the cause to a fault in a mechanical component rather than electronics.
03-05-2019, 08:25 PM   #3
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QuoteOriginally posted by Lee Clary Quote
Brand new to photography and my auto mode is all dark. This happened after the camera hadn't been used for months. How can I verify if this is a setting problem or if it's the aperture solenoid problem...or something else entirely. Thanks in advance for your help!
Here is the full list of steps, if needed:

Dark exposure problems on K-30 or K-50? Discussion Thread - PentaxForums.com

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03-05-2019, 09:40 PM   #4
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QuoteOriginally posted by Lee Clary Quote
Brand new to photography and my auto mode is all dark. This happened after the camera hadn't been used for months. How can I verify if this is a setting problem or if it's the aperture solenoid problem...or something else entirely. Thanks in advance for your help!
Lee, my K-50 developed the aperture block problem a couple years ago, which was a great disappointment to me as I really liked the K-50. I had been using it for about 3-4 years. I hope this does not turn out to be the problem for your camera. However, in my case there was a silver lining on that rain cloud. After trying to get my K-50 repaired and that not working out, I decided to get a K-70 to replace it, in a kit with the 18-135 lens. I've been very pleased with both camera and lens. Although it cost me money to make this upgrade, in some respects I consider the demise of my K-50 a fortunate accident, as the K-70 is superior in many ways, yet it preserves many of the things that I really liked about the K-50. Good luck to you, and I hope you continue to enjoy shooting with a Pentax.

03-06-2019, 07:28 AM   #5
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Before getting mired in the sometimes contentious discussion thread try this one first:
Dark exposure problems on K-30 or K-50? Read me first! - PentaxForums.com
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