Nikon D3s Body Only D3S User's Manual - Page 75

Focus and Shoot 1 Press the shutter- release button halfway to focus (0 50). Focus point At default settings, the camera will focus on the s subject in the center focus point. Frame a photo in the viewfinder with the main subject Focus indicator Buffer capacity positioned in the center focus point and press the shutter-release button halfway. If the camera is able to focus, the in-focus indicator (I) will appear in the viewfinder. Viewfinder display I 2 4 24 (blinks) Description Subject in focus. Focus point is between camera and subject. Focus point is behind subject. Camera unable to focus on subject in focus point using autofocus. While the shutter-release button is pressed halfway, focus will lock and the number of exposures that can be stored in the memory buffer ("t"; 0 105) will be shown in the viewfinder display. For information on what to do if the camera is unable to focus using autofocus, see "Getting Good Results with Autofocus" (0 98). 49