Canon EOS RP Advanced User Guide - Page 243

Recording Movies ooFor movie recording, the ISO speed cannot be expanded to L (equivalent to ISO 50). ooWhen switching from still photo shooting to movie recording, check the camera settings again before recording movies. ooDuring movie recording, avoid changing the shutter speed or aperture. Doing so may record the changes in the exposure or create more noise at high ISO speeds. ooWhen recording a movie of a moving subject, a shutter speed of approx. 1/25 sec. to 1/125 sec. is recommended. The faster the shutter speed, the less smooth the subject's movement will look. ooIf you change the shutter speed while recording under fluorescent or LED lighting, image flicker may be recorded. ooWith ISO Auto, exposure compensation can be set in a range of ±3 stops. ooWhen ISO Auto is set, you can press the button to lock the ISO speed. After locking the ISO speed during movie recording, you can cancel it by pressing the button. (ISO speed lock is maintained until you press the button.) ooIf you press the button and recompose the shot, you can see the exposure level difference on the exposure level indicator compared to when the button was pressed. ooWith the camera ready to shoot in the [M] mode, you can display the histogram by pressing the button. ISO Speed in [M] Mode You can set the ISO speed manually or select [AUTO] to set it automatically. For details on the ISO speed, see =589. 243