The NIKKOR Z 58mm f/0.95 S Noct is a manual focus lens. Not manual-focus-by-default with an AF override — strictly manual, with no autofocus motor, by design. At f/0.95 on a full-frame sensor, the depth of field at a two-meter subject distance is approximately 1.5 centimeters. You are focusing by hand into a window of light that is smaller than the diameter of a fingernail. This is an exercise in discipline, not convenience.