Nikon 25414 D2Xs User's Manual - Page 103

Taking Photographs-Exposure Aperture Flexible Program In programmed auto, different combinations of shutter speed and aperture can be selected by rotating the main command dial ("flexible program"). All combinations produce the same exposure. While flexible program is in effect, an asterisk ("*") appears next to the exposuremode indicator in the top control panel. To restore default shutter speed and aperture settings, rotate the main command dial until the indicator is no longer displayed. Default settings can also be restored by turning the camera off, selecting another exposure mode, performing a two-button reset ( 136), or choosing another setting for Custom Setting b3 (EV step; 192). Exposure Program The exposure program for programmed auto is shown in the following graph: ISO 100; lens with maximum aperture of f/1.4 and minimum aperture of f/16 (e.g., AF 50 mm f/1.4 D) [ EV] F1 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 F1.4 15 F2 16161 /3 F2.8 17 F4 18 F5.6 19 F8 20 F11 21 F16 22 F22 23 F32 30" 15" 8" 4" 2" 1" 2 4 8 15 30 60 125 250 500 1000 2000 4000 8000 Shutter speed The maximum and minimum values for EV vary with ISO sensitivity; the above graph assumes an ISO sensitivity of ISO 100 equivalent. When matrix metering is used, values over 161/3 EV are reduced to 161/3 EV. 89