Canon EOS M200 Advanced User's Manual page 113

Exposure Compensation with ISO Auto
If the ISO speed is set to [AUTO] for manual exposure shooting, you can
set exposure compensation ( = 139) as follows:
Touch the exposure level indicator
z
[z: Exposure comp.]
z
If ISO Auto is set, the ISO speed setting will change to obtain the standard
z
exposure with the set shutter speed and aperture. Therefore, you may
not obtain the desired exposure effect. In this case, set the exposure
compensation.
With evaluative metering, holding down the shutter button halfway locks the
z
ISO speed once the subject is in focus with One-Shot AF.
When ISO Auto is set, you can press the <A> button to lock the ISO speed.
z
To compare the current exposure to the exposure when you pressed the
z
<A> button initially with a manually set ISO speed, press the <A> button,
recompose the shot, and check the exposure level indicator.
6
Set the exposure and take the
picture.
Check the exposure level indicator
z
and set the desired shutter speed and
aperture value.
Manual Exposure Mode (M)
113