Pentax K20D User Manual page 86

Hyper-program
To change the shutter speed
You can switch to Shutter Priority automatic exposure by turning the
front e-dial in e (Hyper-program) mode.
• You can only set the shutter speed to a value that will give a correct
exposure with the aperture range of the lens being used.
• If the brightness changes and the aperture value is outside the
relative range, the aperture value will blink in the viewfinder and on
the LCD panel.
• Press the Green button to return to Hyper-program automatic
exposure.
To change the aperture
You can switch to Aperture Priority automatic exposure by turning the
rear e-dial in e (Hyper-program) mode.
• You can only set the aperture to a value that will give a correct
exposure within the range of available shutter speeds.
• If the brightness changes and the shutter speed is outside the relative
range, the shutter speed will blink in the viewfinder and on the LCD
panel.
• Press the Green button to return to Hyper-program automatic
exposure.
Using the K (Sensitivity Priority) Mode
You can set the sensitivity to suit the brightness of the subject.
The shutter speed and aperture are automatically set according to the
selected sensitivity to obtain the appropriate exposure.
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Set the mode dial to K.
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