I have Nikon D40 digital SLR, and i am getting black specks (dust) on my photos. i have cleaned the lens, the mirror, and i bought a sensor cleaning kit; but i can't figure out how to flip the mirror out of the way to clean the sensor. Without the lens attached, my camera is rendered pretty much useless, and i can't get to my sensor. It just sits there saying 'LENS NOT ATTACHED' (somehow it thinks i haven't realized that already).
Can anyone help?
Can anyone help?