Nikon Z 50 Reference Manual - Page 331

g3: AF Speed G button ➜ A (Custom Settings menu) Choose the focus speed for movie mode. To choose when the selected option applies, highlight When to apply and press 2. Choose from Always (the selected option applies whenever the camera is in movie mode) and Only while recording (the selected option applies only while recording is in progress; at other times, the focus speed is "+5", or in other words as fast possible). g4: AF Tracking Sensitivity G button ➜ A (Custom Settings menu) 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. Menu Guide > A Custom Settings 303