http://www.nikonchat.com/nikon-imaging-centre/

small black dot appeared in my photos DSLR.?
I bought Nikon D80 and I noticed very slight black dot in the upper right center, when it comes to the digital image to see grayish stain point as a powder. Anybody know what it is and how to fix. NIKON not come with warranty?
Dust on the sensor is normal, but annoying. It is part of routine maintenance to clean the sensor with a hand blower. I use Photoshop to edit out more that even sneak in between the sensor clean. This article has photos of dust in such an image: http://digital-photography.suite101.com/article.cfm/spotty_digital_photos
Tokina AF 16-50mm F2.8 AT-X DX Lens Canon-Nikon Review