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Old Jul 15, 2013, 4:49 AM   #1
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Can anyone please shed some light on a problem for me?
When I take photos at f5 they are pretty clean but when I take the same photo at f22 they are covered in dirt.
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Old Jul 15, 2013, 5:09 AM   #2
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It's possible that there's dirt on the lens that is in focus in the greater depth of field that results from using an aperture of f/22, but not in the much shallower depth of field when using an aperture of f/5.

What kind of camera are you using?

Can you post some examples of the results you're getting?
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Old Jul 15, 2013, 5:24 AM   #3
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If thee's dust on your sensor,they'll usually appear stronger at a smaller aperture...
http://www.cambridgeincolour.com/tut...r-cleaning.htm
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Old Jul 16, 2013, 1:25 AM   #4
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Hi tcav, I have a canon 350d with the efs 18-55 lens
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Old Jul 16, 2013, 6:43 AM   #5
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Quote:
Originally Posted by coastbhoy View Post
Hi tcav, I have a canon 350d with the efs 18-55 lens
Try cleaning both sides of the lens.
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Old Jul 18, 2013, 2:27 AM   #6
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Thanks tcav but it is happening when I clean both sides of the lens and with different lens as well.
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Old Jul 18, 2013, 6:48 AM   #7
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If it happens with different lenses then the dirt is on the sensor.

Try cleaning the sensor. You can start with a blower, and if that doesn't work, try a wet swab cleaning kit.
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Old Jul 21, 2013, 9:58 AM   #8
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The spots you see are dust / dirt on your sensor, get a rocket blower and try to blow it off before trying a "wet" cleaning. Dust, fingerprints, small scratches, and specks of dirt on your lens will never show in your images, the most they'll do is reduce contrast or increase flare, unless of course you have chunks of mud plastered to them.
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