Nikon D40 - Manual (Page 20)

8 Introduction: First Steps
First Steps
Attaching a Lens
Autofocus is supported with AF-S and AF-I lenses only. Care should be taken to prevent
dust from entering the camera when exchanging lenses.
1 Turn the camera off and remove the body cap.
Remove the rear lens cap from the lens.
2 Keeping the mounting index on the lens aligned with the
mounting index on the camera body, position the lens in the
camera’s bayonet mount and rotate the lens in the direction
shown until it clicks into place.
If the lens is equipped with an A-M or M/A-M switch, select A
(autofocus) or M/A (autofocus with manual priority).
Detaching Lenses
Be sure the camera is off when removing or exchanging lenses. To
remove the lens, press and hold the lens-release button while turning the
lens clockwise. After removing the lens, replace the camera body cap and
rear lens cover.
Aperture Ring
If the lens is equipped with an aperture ring, lock aperture at the minimum setting (highest f/-num-
ber). See the lens manual for details.