John Skinner Offline Upload & Sell: Off
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I think more people have this on their sensors, but fail to see or realize it.
Condensation spots on a sensor are not the same (usually) as a dust spot.
Condensation usually shows up as a very soft looking doughnut shape and can be see by opening an image shot in Adobe Camera Raw(depending on what RAW converter you use), this is best done with the typical test type image shot against a plain bright background @f/22. Once the image is open, head to the 'sharpen' icon. And whilst holding down the ALT KEY, move 'MASKING' slider to the right.
This will show you the condensation rings/doughnuts which again, will show up as very soft looking rings. In most cases these have no effect on your images. But in some cases depending on a slew of factors like contaminants in the air, light box... They may show up with a greater intensity.
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