JW LH-82 Reversible Lens Hood Shade For Canon EF 16-35mm f/4L IS USM Lens Replaces Canon EW-82 + JW emall Micro Fiber Cleaning Cloth Blocks stray light from entering the lens Reversible for easy storage Will not affect the use of lens cap or filter Non-glare matte finish prevents reflections No vignetting will be caused with the hood on