Canon EOS RP Instruction Manual page 342

Setting the ISO Speed for Still Photos
Setting the ISO Speed Range for ISO Auto
You can set the automatic ISO speed range for ISO Auto within ISO
100–40000.
The [Minimum] and [Maximum] settings will also function as the minimum
o
and maximum speeds for ISO speed safety shift ( = 529).
134
1
Select [Auto range].
2
Set the minimum limit.
Select the minimum limit box, then press
z
< 0 >.
Select the ISO speed, then press
z
< 0 >.
3
Set the maximum limit.
Select the maximum limit box, then
z
press < 0 >.
Select the ISO speed, then press
z
< 0 >.
4
Select [OK].