Canon EOS 80D - Manual (Page 192)

192
In this mode, you set the shutter speed and the camera automatically
sets the aperture to obtain the standard exposure matching the
brightness of the subject. This is called shutter-priority AE. A faster
shutter speed can freeze the action of a moving subject. A slower
shutter speed can create a blurred effect, giving the impression of
motion.
* <s> stands for Time value.
1
Set the Mode Dial to <s>.
2
Set the desired shutter speed.
 While looking at the LCD panel, turn
the <6> dial.
3
Focus on the subject.
 Press the shutter button halfway.
 The aperture is set automatically.
4
Check the viewfinder display and
shoot.
 As long as the aperture is not
blinking, the standard exposure will
be obtained.
s
: Shutter-Priority AE
Blurred motion
(Slow shutter speed: 1/30 sec.)
Frozen motion
(Fast shutter speed: 1/2000 sec.)