Nikon D5200 18105mm Kit Auto ISO Sensitivity control, A Maximum Sensitivity/Minimum Shutter Speed

❚❚Auto ISO Sensitivity control

If Off is chosen for Auto ISO sensitivity control in P, S, A, and M modes, ISO sensitivity will remain fixed at the value selected by the user (0 49). When On is chosen, ISO sensitivity will automatically be adjusted if optimal exposure can not be achieved at the value selected by the user (ISO sensitivity is adjusted appropriately when the flash is used). The maximum value for auto ISO sensitivity can be selected using the Maximum sensitivity option in the Auto ISO sensitivity control menu (choose lower values to prevent noise (randomly-spaced bright pixels, fog, or lines, but note that if the ISO sensitivity selected by the user is higher than that chosen for Maximum sensitivity, the value selected by the user will be used instead; the minimum value for auto ISO sensitivity is automatically set to ISO 100)). In modes P and A, sensitivity will only be adjusted if underexposure would result at the shutter speed selected for Minimum shutter speed (1/2000–1 s, or Auto; in modes S and M, sensitivity will be adjusted for optimal exposure at the shutter speed selected by the user). If Auto (available only with CPU lenses) is selected, the camera will choose the minimum shutter speed based on the focal length of the lens (auto shutter-speed selection can be fine-tuned by highlighting Auto and pressing 2 ; for example, faster values can be used with telephoto lenses to reduce blur). Slower shutter speeds will be used only if optimum exposure can not be achieved at the ISO sensitivity value selected for Maximum sensitivity.

When On is selected, the viewfinder shows ISO-AUTOand the information display ISO-A. These indicators flash when sensitivity is altered from the value selected by the user.

AMaximum Sensitivity/Minimum Shutter Speed

When auto ISO sensitivity control is enabled, the ISO sensitivity	Minimum shutter speed
and shutter speed graphics in the information display show the
maximum sensitivity and minimum shutter speed.

Maximum sensitivity

AAuto ISO Sensitivity Control

Noise (randomly-spaced bright pixels, fog, or lines) is more likely at higher sensitivities. Use the High ISO NR option in the shooting menu to reduce noise (0 153). Note that ISO sensitivity may be raised automatically when auto ISO sensitivity control is used in combination with slow sync flash modes (available with the built-in flash and the optional flash units listed on page 205), possibly preventing the camera from selecting slow shutter speeds.

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