Lensa Mount EF Aperture Range: f/1.4-22 Two High Refraction Lens Elements Gaussian Optics Eliminate Astigmatism Ultrasonic Autofocus Motor Manual Focus Override Infrared Index Minimum Focus Distance: 17.8″ Filter Thread Diameter: 58mm Related PostsExcell Vega 270 TripodExcell Vipod 300 TripodBattery Grip Meike MK-1100D BG-E10 for Canon 1100DBattery Grip Meike for Nikon D5500NiceFoto Reflective Umbrella 40inchGodox RFT-05 5-in-1 Reflector 110cm