Canon EOS RP Advanced User Guide - Page 106

Long (Bulb) Exposures In this mode, the shutter stays open as long as you hold down the shutter button completely, and closes when you let go of the shutter button. This photographic technique is called "bulb exposure". Use bulb exposures for night scenes, fireworks, the heavens, and other subjects requiring long exposures. 1 Set the Mode dial to . 2 Set the desired aperture. zz Turn the dial to set it. 3 Take the picture. zz The exposure will continue for as long as you keep the shutter button pressed completely. ggThe elapsed exposure time will be displayed on the screen. ooDo not point the camera toward an intense light source, such as the sun or an intense artificial light source. Doing so may damage the image sensor or the camera's internal components. ooLong bulb exposures produce more noise in the image than usual. ooIf ISO Auto is set, ISO 400 will be set (=582). ooWhen shooting bulb exposures with the self-timer instead of the bulb timer, keep pressing the shutter button completely (for the self-timer time and bulb exposure time). 106