Nikon D7000 User Manual page 49

Press _) to exit when settings are complete.
When On is selected, the display at right appears
in the viewfinder and control panel. When
sensitivity is altered from the value selected by the
user, these indicators blink and the altered value is
shown in the information display.
t_z Zt _[
[] Auto ISO Sensitivity Control
Noise is more likely at higher sensitivities. Use the High ISO NR option in the shooting menu
to reduce noise (see page 205). When a flash is used, the value selected for Minimum
shutter speed is ignored in favor of the option selected for Custom Setting el (Flash sync
speed, _ 222). 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 SB-900, SB-800, SB-700, SB-600, and SB-400 flash units), possibly
preventing the camera from selecting slow shutter speeds.
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