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Old Jan 8, 2011, 9:45 AM   #1
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When viewing downloaded aircraft photos that I took yesterday, I noticed a few dim donuts that appeared on several shots in the same relative area of the frame. Using my mirror lens will produce these donuts when photographing images that include out of focus highlights. I finally came to the conclusion that these particular donuts were produced by the landing lights of trailing aircraft on the same approach path and a few miles away. These may been seen in the bottom right corner of the attached image.
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Old Jan 8, 2011, 1:46 PM   #2
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Streets,

I ran your image through the equalize filter in PSE and came up the image below. In addition to the more pronounced circles on the lower right, I also notice similar circles on the left bottom as well. You might want to reconfirm if indeed these are from other aircraft lights or some contamination on the sensor. I have circled the "circles" that I could see.

Jehan


Last edited by Wingman; Jan 8, 2011 at 7:16 PM.
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Old Jan 8, 2011, 4:25 PM   #3
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Jehan, you are right. It was contamination on the sensor. Looks like you solved the puzzle. Thanks.
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