Canon EOS RP Advanced User's Manual page 241

M Manual Exposure Recording
You can manually set the shutter speed, aperture, and ISO speed for movie
recording.
1
Set the Mode dial to <k>.
2
Press <0>.
3
Select [M].
Use the < W > < X > keys to select [ M
z
(Movie manual exposure)], then press
< 0 >.
Selection is also possible by turning the
z
< 6 > or < 5 > dial.
4
Set the ISO speed.
Press the < B > button.
z
Turn the < 5 > dial to select the ISO
z
speed item.
Turn the < 6 > dial to set it.
z
Recording Movies
241