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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.
A Turning 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-
command dial.
ISO-AUTO is displayed when auto ISO
sensitivity control is on.
A Auto 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.
Control panel Viewfinder
W (S) button Sub-command
dial
Adjusted value
Selected value