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Taking Photographs—Exposure
Shutter-Speed and Aperture Lock
The button can be used to lock shutter speed at the value selected in shut-
ter-priority auto or manual exposure mode, or to lock aperture at the value
selected in aperture-priority auto and manual exposure modes. Lock is not
available in programmed auto.
Shutter-Speed Lock
To lock shutter speed at the selected value, press the
button and rotate the
main command dial until shutter-speed lock icons appear in the viewfi nder
and the top control panel.
To unlock shutter speed, press the button and rotate the main command
dial until the lock icons disappear from the displays.
Aperture Lock
To lock aperture at the selected value, press the button and rotate the
sub-command dial until aperture lock icons appear in the viewfi nder and the
top control panel.
To unlock aperture, press the button and rotate the sub-command dial
until the lock icons disappear from the displays.