Canon EOS 80D - Manual (Page 418)

3 Custom Function SettingsN
418
C.Fn II -4 AI Servo 1st image priority
You can set the AF operation
characteristics and shutter-release timing
for the first shot with AI Servo AF.
Equal priority:
Equal priority is given to focusing and shutter release.
s : Release priority
Pressing the shutter button takes the picture immediately even if
focus has not been achieved. Useful when you want to give priority
to capturing the image rather than achieving focus.
t : Focus priority
Pressing the shutter button does not take the picture until focus is achieved.
Useful when you want to achieve focus before capturing the shot.
C.Fn II -5 AI Servo 2nd image priority
You can set the AF operation
characteristics and shutter-release timing
during continuous shooting after the first
shot with AI Servo AF.
Equal priority:
Equal priority is given to focusing and continuous shooting speed. In
low light or with low-contrast subjects, shooting speed may slow down.
v :Shooting speed priority
Priority is given to the continuous shooting speed instead of
achieving focus.
t : Focus priority
Priority is given to achieving focus instead of the continuous shooting
speed. The picture will not be taken until focus is achieved.
Under shooting conditions which activate anti-flicker shooting (p.179), even
if [Speed] is set, the continuous shooting speed may become slower or the
shooting interval may become irregular.