Canon EOS R50 Mirrorless Camera (White) - Manual (Page 145)

Caution
Do 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.
Long bulb exposures produce more noise in the image than usual.
ISO 400 is used when the camera is set to ISO Auto.
Note
You can reduce the noise generated during long exposures by using [ : Long
exp. noise reduction ] ( ).
Using a tripod is recommended for bulb exposures.
You can also shoot bulb exposures by using Wireless Remote Control BR-E1 (sold
separately,
). When you press the remote controller's release (transmit) button,
the bulb exposure will start immediately or 2 sec. later. Press the button again to
stop the bulb exposure.
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