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03-06-2012, 05:58 PM   #1
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K20 exposure problems

My K20 has very erratic exposure with most of the bad ones being over exposed. I tend to shoot rapid shot strings (dog agility shots and birds) and one out of five may be correctly exposed.

I suspect the shutter speed is off but I'm not sure how to test for that.

Looking for hints, advise on the problem. I have a K5 now but it would make a decent backup camera but I'm not sure if its worth repairing.

Thanks!

Ron

03-06-2012, 07:50 PM   #2
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Have you checked if the bracket function is on? It can be set to 3 or 5 bracket exposures and if accidentally engaged, it will seem like what you are describing.
03-06-2012, 08:36 PM   #3
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That was a very good idea, had not even considered that. But alas, that is not it.
03-06-2012, 08:47 PM   #4
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QuoteOriginally posted by rboe Quote
My K20 has very erratic exposure with most of the bad ones being over exposed. I tend to shoot rapid shot strings (dog agility shots and birds) and one out of five may be correctly exposed.
Ron
So far I have to say my K20d exposes better than my k-5 but thats just me. What exposure mode (spot, etc.) are you using and do you tend to have high contrast between subject and background?

03-06-2012, 09:11 PM   #5
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Area for now. I tend to use spot though. Just playing with a bit now and it was really goofing up. I could see the shutter speed change in the viewer so I played with some settings. I need to check the firmware level too to see if a newer version is available.

The K5 seems to have exposure problems from time to time too, but that seemed to be related to spot metering on a black dog in bright sunlight.
03-06-2012, 09:20 PM   #6
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Since you use Spot but understand how it can screw up overall exposure I assume you tried at least working with center weighted and still get the same issues?

What mode do you use when exposure is typically bad? (Ap Pri, M, Green, etc.)

If you have a composition with consistant lighting from minute to minute and shoot from a tripod with settings the same, does the exposure change randomly or stay as it was with the first shot be it good or bad?
03-07-2012, 10:57 AM   #7
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As usual, sample images with Exif would help.
03-08-2012, 06:15 PM   #8
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I'll see what I can come up with. In-laws are in town now and time seems to be sucked away!

03-08-2012, 06:27 PM   #9
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Making sure the basics are covered,

Have you tried other lenses? or the same lens in another camera?
I'm thinking that a slow closing lens (sticky blades) could cause that.

Are the pictures overexposed as per the histogram, or just the LCD screen?
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