Pentax OPTIO M30 Operating Manual page 91

You can select the sensitivity to suit the brightness of the surroundings.
Sensitivity
Auto
64
100
200
400
800
1600
3200
Sensitivity is automatically adjusted to between ISO 64 and 400.
.• The lower the sensitivity, the less noise that affects the image. The
shutter speed will be slower in low light conditions.
• Higher sensitivity settings use faster shutter speeds in low light
conditions to reduce camera shake, but the image may be affected by
noise.
1
2
3
4
5
6
Press the MENU button in 13 mode.
The [1_ Rec. Mode] menu appears.
Use the four-way controller (• • ) to select [Sensitivity].
Press the four-way controller ( _ ).
A pull-down menu appears.
Use the four-way controller (• • )
to change the sensitivity.
Press the OK button.
_Cancel _OK
The Sensitivity setting is saved.
Press the MENU button.
The camera returns to capture status with the current setting.