Shutter-Speed and Aperture Lock
Shutter speed lock is available in shutter-priority auto and manual exposure modes, aperture lock in aperture-priority auto and manual exposure modes. Shutter speed and aperture lock are not available in programmed auto exposure mode.
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Assign shutter speed and aperture lock to a camera control.
Assign Shutter spd & aperture lock to a control using Custom Setting f1 (Custom control assignment, 0 Custom Control Assignment).
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Lock shutter speed and/or aperture.
Shutter speed (exposure modes S and M): Press the selected control and rotate the main command dial until F icons appear in the viewfinder and control panel.
To unlock shutter speed, press the control and rotate the main command dial until the F icons disappear from the displays.
Aperture (exposure modes A and M): Press the selected control and rotate the sub-command dial until F icons appear in the viewfinder and the control panel.
To unlock aperture, press the control and rotate the sub-command dial until the F icons disappear from the displays.
See Also
For information on keeping shutter speed and/or aperture locked at the selected values, see A > Custom Setting f3 (Shutter spd & aperture lock; 0 Shutter Spd & Aperture Lock).