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Message: <blockquote data-quote="Dave_W" data-source="post: 64140" data-attributes="member: 9521">At this point your only option is to send it to Nikon for a cleaning. How long have you had the camera? It's advised to have it professionally cleaned every 1 to 2 yrs so depending upon how long you've had it, it may be ready for a good scrub. Btw, the spot is not on the sensor, per se, rather it's on the anti-aliasing filter or more precisely the "Optical Low-pass filter" (OLPF). It is placed directly in front of the sensor. I just got my D7000 back from Nikon due to oil spots on the filter. I was fortunate enough to have my Nikon rep authorize the work instead of paying the $79 it usually costs. Interestingly they didn't bother cleaning it but instead replace the entire mirror box which I assume holds the OLPF and it works like a champ!</blockquote>