Setting The Iso Speed - Canon EOS 30D Instruction Manual

ISO
Setting the ISO Speed
*
The ISO speed is a numeric indication of the sensitivity to light. A higher
ISO speed number indicates a higher sensitivity to light. Therefore, a
high ISO speed is suited for low light and moving subjects. However,
the image may look more coarse with noise, etc. On the other hand, a
low ISO speed is not suited for low light or action shots, but the image
will look cleaner.
The camera can be set between ISO 100 and 1600 in 1/3-stop
increments.
ISO Speed in the Basic Zone Modes
The ISO speed is set automatically within ISO 100-400.
ISO Speed in the Creative Zone Modes
ISO 100-1600 can be set in 1/3-stop increments. With C.Fn-08 [ISO
expansion] set to [1: On] (p.170), "H" (ISO 3200) can also be set.
Press the
<
DRIVE-ISO>
button.
(06)
The current ISO speed will be
displayed on the LCD panel.
In a Basic Zone mode, "Auto" will be
displayed on the LCD panel.
Setting the ISO Speed.
While looking at the LCD panel or
viewfinder, turn the
<
0
>
dial.
At higher ISO speeds and higher ambient temperatures, the image will
have more noise.
High temperatures, high ISO speeds, or long exposures may cause
irregular colors in the image.
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