Aboriginal teenager Kumanjayi Walker was unlikely to have been a threat to murder-accused Constable Zachary Rolfe when the policeman fatally shot him, a jury had been told.
Human movement expert Andrew McIntosh studied police body-worn camera footage of Rolfe, 30, firing three shots into the teen on November 9, 2019.
Dr McIntosh found Rolfe had moved away from Mr Walker, 19, before he pulled the trigger for the first time.