Nikon 25464 D300S User's Manual - Page 131

To choose the exposure mode, press the I button and rotate the main command dial until the desired mode is displayed in the control panel or viewfinder. I button Main command dial A Depth-of-Field Preview To preview the effects of aperture, press and hold the depth-of-field preview button. The lens will be stopped down to the aperture value selected by the camera (modes e and f ) or the value chosen by the user (modes g and h), allowing depth of field to be previewed in the viewfinder. Preview button A Custom Setting e4-Modeling Flash Z This setting controls whether the built-in flash and optional flash units that support the Creative Lighting System (CLS; see page 348) will emit a modeling flash when the depth-of-field preview button is pressed. See page 289 for more information. A See Also See page 98 for information on auto ISO sensitivity control. For information on using the Long exp. NR option in the shooting menu for reducing noise at slow shutter speeds, see page 258. For information on choosing the size of the increments available for shutter speed and aperture, see Custom Setting b2 (EV steps for exposure cntrl., 0 270). For information on changing the roles of the main and sub-command dials, see Custom Setting f8 (Customize command dials > Change main/sub, 0 297). 105