Pentax K-30 Operating Manual page 261

s
A
c
c
c
c
a
s
23. Using Aperture Ring Using Aperture Ring
23.
Disable Disable
1 1
Enable Enable
2 2
Shutter will release when Shutter will release when
aperture ring is not set to the aperture ring is not set to the
"A" position "A" position
Cancel Cancel
MENU
s
a C
OK OK
OK
c