#Continuous Servo AF

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Continuous Servo AF is a focus mode on Nikon DSLRs in which autofocus is continuously readjusted for a moving subject (or moving photographer) as long as the shutter is partially depressed. If a photographer uses shutter button focus (this is the default way cameras are configured, where focus is attained when the shutter button is half-depressed) and their camera’s autofocus mode is set to Continuous Servo AF, whatever is located within the frame where the autofocus point or points are selected will be in focus, even if it moves. This is useful for photographing moving subjects or if the photographer is moving, for instance, if they are shooting from a vehicle.