140Shutter speed lock is available in shutter-priority auto andmanual exposure modes, aperture lock in aperture-priority autoand manual exposure modes. Shutter speed and aperture lockare not available in programmed auto exposure mode.1 Assign shutter speed and aperture lock to a camera control.Assign Shutter spd & aperture lock to a control usingCustom Setting f1 (Custom control assignment, 0 301).2 Lock shutter speed and/or aperture.Shutter speed (exposure modes S and M):Press the selected control and rotatethe main command dial until F iconsappear in the viewfinder and controlpanel.To unlock shutter speed, press thecontrol and rotate the main command dial until the F iconsdisappear from the displays.Aperture (exposure modes A and M): Pressthe selected control and rotate thesub-command dial until F iconsappear in the viewfinder and thecontrol panel.To unlock aperture, press the controland rotate the sub-command dial until the F icons disappearfrom the displays.Shutter-Speed and Aperture LockA See AlsoUse Custom Setting f3 (Shutter spd & aperture lock; 0 302) to keepshutter speed and/or aperture locked at the selected values.
