Canon EOS 100D Instruction Manual page 100

i: Changing the ISO SpeedN
Shooting Mode
A/7/C/2/4/5
3
C/P/x/6/G
8
F
d/s/f/a *
With flash
*1: Fixed at ISO 400 for bulb exposures.
*2: Depends on the maximum ISO speed limit set.
*3: If fill flash results in overexposure, ISO 100 or a higher ISO speed will be set.
*4: Except in the A, C, 6, and F modes.
*5: Automatically set within ISO 400 - 1600 (or up to the maximum limit) in the C,
2, 3, 4, 5, P and <d> modes if you use bounce flash with an external
Speedlite.
When [AUTO] is set, the ISO speed is indicated in whole-stop increments.
However, the ISO speed is actually set in finer increments. Therefore, in the
image's shooting information (p.270), you may find an ISO speed such as
125 or 640 displayed as the ISO speed.
3 Setting the Maximum ISO Speed for [ISO Auto]M
For ISO Auto, you can set the maximum ISO speed limit within ISO 400
- 6400.
100
Automatically set within ISO 100 - 6400
Automatically set within ISO 100 - 1600
Automatically set within ISO 100 - 6400
Automatically set within ISO 100 - 12800
1
Automatically set within ISO 100 - 6400*
ISO 400 *
ISO Speed Setting
3 4 5
* *
Under the [z2] tab, select [ISO Auto],
then press <0>. Select the ISO
speed, then press <0>.
2