Key Features: -Covers Full-Frame Sensors -Aperture Range: T2.9 to T16 -Neutral Streak Effects, Oval Bokeh -Lightweight, Carbon Fiber Barrel -1.6x Constant Squeeze Ratio -10-Blade Iris Produces Oval Bokeh -Horizontal FOV of 22mm Spherical Lens -Minimum Focus: 0.9m, 58mm Filter Thread -Focus Scales in Feet & Meters. Chasing birds Waterproof Lens Camouflage for CANON RF 100-300mm F2.8 L IS. Chasing birds Waterproof for NIKON AF-S 500mm F/4 G EDVR Camouflage Rain Cover.