Pentax K20D Operating Manual page 81

When the exposure mode is set to a (Hyper-manual), p (Bulb) or M (Flash X-
sync speed), the sensitivity cannot be set to [AUTO].
Changing the Sensitivity in Capture Mode
Press the 4 button in Capture mode. The set sensitivity is displayed on
the LCD panel and in the viewfinder. Turn the front e-dial while pressing
the 4 button to change the sensitivity.
• You can set the sensitivity to ISO AUTO by pressing the Green button while
pressing the 4 button when the exposure mode is set to e (Hyper-
program), b (Shutter Priority), or c (Aperture Priority).
• You can display the number of recordable images by pressing the 4 button
when the exposure mode is set to K (Sensitivity Priority) or L (Shutter
and Aperture Priority).
Expanding the Dynamic Range
Dynamic range is the ratio that indicates the light level expressed by the
CMOS sensor pixels from bright areas to dark areas.
By using the Expand Dynamic Range function, you can expand the light
level expressed by the CMOS sensor pixels, making it more difficult for
bright areas to occur in the image.
Press the { button for the [Sensitivity] setting in the Fn menu to turn this
function on or off.
Sensitivity Sensitivity Sensitivity
AUTO AUTO AUTO 2 0 0 - 4 0 0 2 0 0 - 4 0 0 2 0 0 - 4 0 0
D-Range D-Range D-Range
2 0 0 % 2 0 0 % 2 0 0 %
D-Range D-Range D-Range
Fn
When the dynamic range is expanded, the sensitivity range is reduced to ISO
200 to 3200.
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AUTO AUTO AUTO
2 0 0 2 0 0 2 0 0
4 0 0 4 0 0 4 0 0
8 0 0 8 0 0 8 0 0
1 6 0 0 1 6 0 0 1 6 0 0
3 2 0 0 3 2 0 0 3 2 0 0
OK OK OK
OK
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