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07-21-2015, 05:50 PM   #1
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Light leakage - is this normal?

Hi everyone, brand new Pentax owner (first DSLR) and new to the forum here.

I was trying out some long exposure shots the other night (~45s) and noticed what appeared to be light leakage into the picture. So I did a test shot with the lens cap on (~55s) in a normally-lit room. I did a second test shot with the lens cap on, same exposure time, but this time with the view finder covered. There appears to me to be significant light in the first shot, while the second shot is essentially completely black. So I know what the problem is. My question is: is this normal? Or do I have a defective camera? The two shots are attached.

Thanks in advance!

Attached Images
View Picture EXIF
PENTAX K-50  Photo 
View Picture EXIF
PENTAX K-50  Photo 
07-21-2015, 06:36 PM   #2
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
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Yes, this is normal. The users manual should even tell you to use the view finder cover for long exposures or any time when your eye is not over the view finder. The covers used to be standard issue with the bodies.
07-22-2015, 06:16 AM   #3
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Location: South Bend (Notre Dame), Indiana
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2 reasons to do this:

Cover Your Eyepiece - Digital Photography School - exposure problems
How to Fix Light Leaks in Long Exposure Photography - light streaks
07-22-2015, 09:08 AM   #4
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Original Poster
Thanks for the replies and the links; glad to hear it's normal. I read a few other threads on this forum that said the VF only messes up exposure, and shouldn't leak into the frame. Relieved that I don't have to send it away for repair.

07-22-2015, 10:01 AM   #5
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Yeah. For short exposures, it can mess up metering. For long exposures, especially long exposures that are going to come out dark, it can have a noticeable impact.

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