Nikon D610 User Manual page 52

3
Attach the lens.
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 (q). Being
careful not to press the lens-release button, rotate the lens counter-clockwise
until it clicks into place (w).
X
If the lens is equipped with a focus mode switch, select
autofocus mode (A, M/A, or A/M).
A
Detaching the Lens
Be sure the camera is off when removing or exchanging lenses. To
remove the lens, press and hold the lens release button (q) while
turning the lens clockwise (w). After removing the lens, replace the
lens caps and camera body cap.
D
CPU Lenses with Aperture Rings
In the case of CPU lenses equipped with an aperture ring (0 287),
lock aperture at the minimum setting (highest f-number).
A
Image Area
The DX format image area is automatically selected when a DX lens is
attached (0 89).
26
Image area