Model Canon RF 100-300mm F2.8L IS USM Optical Features / Specifications Angle of View (Horizontal, vertical, diagonal) 20° - 6° 50', 14° - 4° 35', 24° - 8° 15' Lens Construction (Elements/Groups) 23/18 Special Optics 1x Fluorite, 4x UD, 1x GMo aspherical Number of Diaphragm Blades 9 Minimum Aperture 22 Closest Focusing Distance (m) 1.8m (constant) Maximum Magnification (x) 0.06 (at 100mm), 0.16 (at 300mm) Control Ring Yes Image Stabilizer OIS 5.5 stops Image Stabilizer IBIS x OIS 6 stops AF Actuator Dual Nano USM Coatings ASC, Super Spectra Fluorine Front Accessories Lens Cap E-112 Lens Hood ET-124 Lens Case/Pouch Lens Soft Case LS100-300 Rear End Cap Lens Dust Cap RF Extender Compatibility Compatible with RF Extender only Specifications with 1.4x Extender Focal Length 140mm–420mm Maximum Aperture f/4 Maximum Magnification 0.22 AF Possible Yes Image Stabilizer Yes Specifications with 2x Extender Focal Length 200mm–600mm Maximum Aperture f/5.6 Maximum Magnification 0.31 AF Possible Yes Image Stabilizer Yes Physical Specifications Dust/Moisture Resistance Yes Exterior Coating Heat Shield Filter Diameter (mm) 112 Max. Diameter x Length (mm) 128 x 323.4 Weight (g) 2590