Nikon Nikon Df Product Manual - Page 61

A: Aperture-Priority Auto In aperture-priority auto, you choose the aperture while the camera automatically selects the shutter speed that will produce the optimal exposure. To choose an aperture between the minimum and maximum values for the lens, rotate the sub-command dial while the exposure meters are on; the selected aperture is shown in the control panel and viewfinder. Sub-command dial # A Lenses with Aperture Rings If Aperture ring is selected for Custom Setting f7 (Customize command dial) > Aperture setting (0 268), aperture can be set using the lens aperture ring. A Depth-of-Field Preview To preview the effects of aperture, press and hold the Pv button. The lens will be stopped down to the aperture value selected by the camera (exposure modes P and S) or the value chosen by the user (exposure modes A and M), allowing depth of field to be previewed in the viewfinder. Pv button A Custom Setting e5-Modeling Flash This setting controls whether optional flash units that support the Nikon Creative Lighting System (CLS; 0 118) will emit a modeling flash when the Pv button is pressed. See page 259 for more information. 41