Zoom Lenses Spherical Canon Canon Canon CINE-SERVO 50-1000mm T5.0-8.9T-Stop: T5.0 – 8.9Close Focus: 3.5 m / 11.5′Length (front to PL mount flange): 413.2 mm /16.3″Front Diameter: 136 mmWeight: 6.6 kg / 14.55 lb