Pentax K-7 Operating Manual page 71

Operating the shutter release button
The shutter release button has two working positions.
Not pressed Pressed halfway Pressed fully
(first position) (second position)
Pressing it down halfway (first position) turns on the viewfinder
indicators and the autofocus system operates. Pressing it fully
(second position) takes a picture.
• Press the shutter release button gentlywhen taking a picture to prevent
ca mera shake.
• Practice pressing the shutter release button halfway/fully to learn
where the first position and second position are.
• The viewfinder indicators stay on while the shutter release button is
pressed halfway. The indicators stay on for about 10 seconds (default
setting) while the exposu re metering timer is on after the button is
released. (p.31, p.114)
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