Canon EOS 90D DSLR Camera with 18-135mm Lens - Manual (Page 213)

213
M
ISO Speed Settings for Still Photos
Set the ISO speed (image sensor’s sensitivity to light) to suit the ambient
light level. In Basic Zone modes, ISO speed is set automatically.
Regarding the ISO speed during movie recording, see = 620.
1 Press the < i > button ( 9 ).

You can also press the <
Q
> button and
confi gure this setting from the Quick
Control screen.
2 Set the ISO speed.

Turn the <
6
> or <
5
> dial.

Select [A] or [AUTO] to set the ISO
speed automatically ( = 614).
ISO Speed Guide

Low ISO speeds reduce image noise but may increase the risk of
camera/subject shake or reduce the area in focus (shallower depth of
fi eld), in some shooting conditions.

High ISO speeds enable low-light shooting, a larger area in focus (deeper
depth of fi eld), and longer fl ash range but may increase image noise.