I have a circular spot that darkens photos taken on my D300 in the identical location no matter what the image is and what my focal length is. That leads me to believe it's on the CCD.
So I've tried several image sensor cleans with no luck. It got a little smaller but it's still there. I spent a heck of a lot of money on a nice lens so that my IQ will be great so this one tiny spot is driving me NUTS.
Any suggestions on how to get rid of it??? Thanks!