Canon EOS R5 C User Manual page 694

Set aperture range
You can set the aperture value range. In [
aperture value manually within your specified range. In [ ] and [
with the aperture value set to [AUTO], the aperture value is set automatically within your
specified range. Select [OK] to register the setting.
Max. aperture
Can be set in a range of f/1.0–f/64.
Min. aperture
Can be set in a range of f/91–f/1.4.
Note
The available aperture value range varies depending on the lens's minimum and
maximum aperture value.
], [ ], [ ], or [
694
] mode, you can set the
] mode, or in [ ] mode