We had acquired dust on the lens of our Nikon D70. For weeks I”ve been trying to figure out how and where the root of the problem was. I figured it was behind this black thing inside of the lens, that I couldn’t get to, and thought i’d likely have to take it to a repair shop.

It helped tonight when i read the manual. Was very pleased to see that there was a feature, “Mirror Lift”, that is created for the very purpose of cleaning off any dirt on images! yowza. fixed a 1 month problem in 5 minutes. The manual is indeed Fine. ;)