Nikon D200 D200 User's Manual - Page 163
ISO-AUTO, ISO Auto >
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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 200 and maximum selected using Max. Sensitivity option. Flash level is adjusted appropriately when flash is used. In exposure modes P and A, ISO sensitivity will be adjusted if photo would be overexposed at shutter speed of 1/8,000 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 1600 while this option is in effect. Max. Sensitivity Menu shown at right is displayed. ISO value and press multi selector ISO auto menu. Highlight desired right to return to Min. Menu shown at right is displayed. Highlight desired Shutter shutter speed and press multi selector right to return Speed to ISO auto menu. When On is selected, the control panel and viewfinder show ISO-AUTO. When sensitivity is altered from the value selected by the user, these indicators blink and the altered value is shown in the viewfinder (the indicators do not blink if a flash is used). Setup Custom Settings ISO Auto > On When a flash is used, foreground subjects may be underexposed in photos taken at slow shutter speeds, in daylight, or against a bright background. Choose a flash mode other than slow sync or select mode A or M and choose a larger aperture. If a shooting menu bank in which ISO sensitivity has been set to a value greater than 1600 is chosen after On is selected, ISO sensitivity will not be adjusted automatically. ISO sensitiv- ity will also not be adjusted automatically if a Custom Settings bank in which On is selected is chosen after ISO sensitivity has been set to a value over 1600. 153