Canon EOS REBEL T7I Basic Instruction Manual page 121

s: Conveying the Subject's Movement
You can either freeze the action or create motion blur with the <s>
(Shutter-priority AE) mode on the Mode Dial.
* <s> stands for Time value.
Blurred motion
(Slow shutter speed: 1/30 sec.) (Fast shutter speed: 1/2000 sec.)
Set the Mode Dial to <s>.
1
Set the desired shutter speed.
2
Turning the <6> dial clockwise sets

a faster shutter speed, and turning it
counterclockwise sets a slower one.
Take the picture.
3
When you focus and press the

shutter button completely, the picture
will be taken at the set shutter speed.
Frozen motion
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