Reference Manual

289Menu Guide > A Custom Settings
Choose how quickly focus responds
when your subject leaves the focus point
or something passes between the
subject and the camera in movie mode.
Choose from values between 7 (Low)
and 1 (High). The higher the value, the
slower the response and the less likely you are to lose focus on
your original subject when something passes between the
subject and the camera. The lower the value, the quicker the
camera is to respond to the subject leaving the focus area by
shifting focus to a new subject in the same area.
g5: AF Tracking Sensitivity
G button A (Custom Settings menu)