Instructions
Turn off any automatic focus included on the camera. For many Nikon digital SLR cameras, this control will be a switch located on the camera body near the lens mount. Set this control to "M" for manual.
Align the white dot on the side of the camera lens to the white dot on the side of the camera body near the lens mount and insert the lens.
Twist the camera lens gently, without forcing, until the lens is locked into place. The lens is now ready for use with a Nikon DSLR.
Compose your image and focus by using the manual settings on the lens. With zoom lenses, you may adjust the focal length by turning the lens first, then adjusting the fine focus ring located at the end of the lens.