Pentax K-5 II Operating Manual page 59

3
Align the Lens mount index (red
dots;
@)
on the camera and the
lens, and secure by turning the
lens clockwise until it clicks.
After attaching, turn the lens
counterclockwise to check that the lens is
locked in place.
4
Remove the front lens cap by
pushing the indicated portions
inward.
To remove the lens
Attach the lens cap first, and then turn the
lens counterclockwise while holding
down the lens unlock button (@).
The body mount cover (CD) is a cover to prevent scratches and block dust when
shipped. Body Mount Cap K is sold separately and has a lock function.
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