Nikon D2Xs D2Xs User's Manual - Page 205

Menu Guide-Custom Settings Custom Setting b1: ISO Auto Control If On is selected for this option, the camera will automatically adjust ISO sensitivity when necessary to help ensure optimal exposure. This option is not available at ISO sensitivities over 800. Highlight b1 ISO auto in the second level of the CSM menu ( 180) and press the multi selector to the right. Press the multi selector up or down to highlight an option, then press to the right to make a selection. Option Off (default) On Description ISO sensitivity remains fixed at value selected by user, regardless of whether optimal exposure can be achieved at current exposure settings. If optimal exposure can not be achieved at ISO sensitivity selected by user, ISO sensitivity is adjusted to compensate, to minimum approximately equivalent to ISO 100 and maximum selected using Max. Sensitivity option. In exposure modes P and A, ISO sensitivity will be adjusted if photo would be overexposed at shutter speed of / s 18,000 or underexposed at value selected for Min. Shutter Speed. Otherwise camera adjusts ISO sensitivity when limits of exposure metering system are exceeded (mode S) or when optimum exposure can not be achieved at shutter speed and aperture selected by user (mode M). ISO sensitivity can not be set to values over 800 while this option is in effect. Menu shown at right is displayed. Press multi Max. selector up or down to highlight desired ISO sensitivity sensitivity and press to right to return to ISO auto menu. Min. shutter speed Menu shown at right is displayed. Press multi selector up or down to highlight desired shutter speed and press to right to return to ISO auto menu. 191