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08-29-2011, 06:04 PM   #1
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Is it sensor stain?

I have switched 2 different lenses and used sensor cleaning but the spots are the same.

Thanks

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08-29-2011, 06:19 PM   #2
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No, that looks like dust. Try using a rocket blower to clean your sensor.

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08-29-2011, 06:25 PM   #3
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They disappeared at F8 or wider. I just wonder if they are dust, will they disappear at wider aperture like the stain?
08-29-2011, 06:51 PM   #4
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You just have dust, that is not stains. Stains have a distinctive spot in the middle and dark halo around them, and they typically appear in strings. Dust is typcially a solid spot(s) and don't usually form strings.

08-29-2011, 07:08 PM   #5
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OK, thanks
08-29-2011, 07:18 PM   #6
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And yes, it is normal for dust to be more visible at smaller apertures.

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