When On is selected, the viewfinder and control panel show ISO-AUTO. When sensitivity is altered from the value selected by the user, these indicators

flash.

Control panel

Viewfinder

 

 

ATurning Auto ISO Sensitivity Control On or Off

You can turn auto ISO sensitivity control on or off by pressing the W(S) button and rotating the sub- S command dial. ISO-AUTOis displayed when auto ISO

sensitivity control is on.

W(S) button Sub-command dial

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 (see page 228). When a flash is used, minimum shutter speed will be set to the value selected for Minimum shutter speed unless this value is faster than Custom Setting e1 (Flash sync speed, 0 244) or slower than Custom Setting e2 (Flash shutter speed, 0 245), in which case the value selected for Custom Setting e2 will be used instead. 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 304), possibly preventing the camera from selecting slow shutter speeds.

When auto ISO sensitivity control is in effect, the adjusted and selected values appear in the information display as shown at right.

Selected value

Adjusted value

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