Canon EOS Rebel SL2 EOS 200D Instruction Manual page 277

ISO Speed During Movie ShootingN
You can set the ISO speed separately for still photo shooting and movie
shooting. Set under the [z2] tab.
[kISO speed]
In manual exposure, you can set the ISO
speed (p.239).
[kISO Auto]
You can set the maximum limit of the
automatic ISO speed for ISO Auto to ISO
6400 or ISO 12800.
Under [54: Custom Functions(C.Fn)],
if [2: ISO expansion] is set to [1:On],
you can select [Max.:H(25600)].
3 Menu Function Settings
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