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Old Nov 6, 2006, 10:11 AM   #1
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[size=Hi, Can anyone tell me what the black spots in the skyand at the bottom of my photos could be? I am using a Canon 20D with a new EF 28-135mm f/3.5-5.6 IS USM lens. ][/size]I have not had them in previous images with any of my other lenses. The sun was at my back when shooting these photos. Are they normal spots or are they caused by poor shooting techniques or are theyburnt pixels. How do I fix my camera from doing this? I tried to upload the photos here, but not sure hot to do it. Thank you in advance for your help.
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Old Nov 6, 2006, 10:30 AM   #2
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It would really be helpful if you could upload a shot...
If the black spots on the picture look like faint ghosts and
stay in the same area of each photo you take, chances are
that is dirt on your sensor...I think a dead pixel or pixels
are more defined...Either way, you should see the spots
stay in the same area of the picture...Clean your sensor and
I would also clean your lens, front and back....
:O
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Old Nov 8, 2006, 11:27 AM   #3
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Thank you. I will try that. The spots are black round spots, and in some photos they are transparent. How do I upload a photo here for you to see? WhenI click insert image I get a URL box and my image will not upload? What do I need to do. Thanks.
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Old Nov 8, 2006, 11:44 AM   #4
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Yep that's dust, you will usually find with a narrower aperture that they are darker.

As for uploading a photo if it is on a web site which you use then use the insert image at the top of the post box if not then you can upload from your hard drive by using browse at the bottom (making sure it is not too large).
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Old Nov 9, 2006, 12:40 PM   #5
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Hi Mark,

Thanks for the info, and you are correct,the spotsare darker at a narrower aperture.What is the best cleaning method? Should I send it back to Canon for cleaning?
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Old Nov 9, 2006, 3:26 PM   #6
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I honestly don't know. All I have ever done in the past is air from a foot pump as you can do it with 2 hands giving you more control.

I would put another post on one of the the Q&A sections and I'm sure you will get some great help.
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