Canon EOS Rebel SL1 18-55mm IS STM Kit Instruction Manual page 50

A Fully Automatic Shooting (Scene Intelligent Auto)
The flash fired even though it was daylight.
For a backlit subject, the flash may fire to help lighten the subject's
dark areas. There are two ways to disable the flash:
• Set the flash setting to [b] (Flash off). If you change the shooting
mode or set the power switch to <2>, the setting will revert back
to [a] (Auto flash) (p.71).
• Set the Mode Dial to <7> (Flash Off) (p.53).
The flash fired and the picture came out extremely bright.
Move further from the subject and shoot. When shooting flash
photography, if the subject is too close to the camera, the picture
may come out extremely bright (overexposure).
In low light, the built-in flash fired a series of flashes.
Pressing the shutter button halfway may trigger the built-in flash to
fire a series of flashes to assist autofocusing. This is called AF-assist
beam. Its effective range is approx. 4 meters/13.1 feet.
When flash was used, the bottom part of the picture came out
unnaturally dark.
The shadow of the lens barrel was captured in the picture because
the subject was too close to the camera. Move further from the
subject and shoot. If a hood is attached to the lens, remove it before
taking the flash picture.
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