Detaching The Lens - Nikon D1 Manual

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.3 Lock the aperture ring
If you do not intend to set aperture manually using the lens aperture
ring, lock the lens aperture (the aperture ring can not be used unless
changes have been made to default settings as described in "Custom
Settings," item 22).

Detaching the lens

When no lens is attached...
Note
When attaching or detaching the lens or body cap, be careful that dirt or other foreign
matter does not enter the camera body. The presence of foreign matter inside the
camera could affect your photographs. When changing lenses or replacing the body
cap, hold the camera with the base down or tilted so that the lens mount faces the
ground. Be sure to replace the body cap when no lens is in place.
First Steps: Attach the Lens
Before detaching the lens, turn the cam-
era off. Then turn the lens clockwise
while holding down the lens-release but-
ton.
If the camera's lens mount is not cov-
ered, dust may find its way onto the
mirror or viewfinder screen. This can be
prevented by attaching the BF-1A body
cap to the camera when no lens is in
place (note that the BF-1 body cap can
not be used with the D1).
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