Pentax K-7 Operating Manual page 110

4
Turn the rear e-dial (;,,_,,_) to
adjust the aperture.
Aperture range depends on the lens in
use.
The shutter speed and aperture value are
displayed on the status screen and LCD
panel and in the viewfinder.
While adjusting the shutter speed or
aperture value, the difference from the
appropriate exposure (EV value) is
displayed in a bar graph. The appropriate
exposure is achieved when the indicator
is displayed in the center of the bar graph.
Difference from the
appropriate exposure
'When the sens tiv tys set to [AUTO] and the exp0sure mode is set to M
model the sensitivity is the lowest sensitivity set in i!Setting the Range of
Aut0matic Sensitivity Co[rection '_(p.90).
, Set the shutter speed and aperture values in increments of 1/3 EV or !/2 EV.
Set the exposure steps in [1 : EV Steps] in the [C Custom Setting 1] menu.
(p.116)