Pentax K-R Operating Manual page 59

A
Remove the front lens cap by
pushing the indicated portions
inward.
To detach the lens, hold down the lens
unlock button (,_) and turn the lens
counterclockwise.
'We assume no responsibility nor liability for accidents, damages and
malfunctions resulting from the use of lenses made by other manufacturers.
• ]-he camera body and tens mount incorporate lens information contacts and
an AF coup!er. Dirt, dust, or corrosion may damage the electrical system.
When necessary, clean the conta cts with a soft dry cloth.
The body moUnt Cover (_]) is a Cover to prevent scratches and block dust when
shipped. Body Mount Cap K is sold separately and has a lock function.