Altura Photo Lens Hood for Canon (Canon EW-83H) A perfect Canon EW-83H replacement. Compatible with Canon EF 24-105mm f/4L IS USM, EF 24-70mm f/4L IS USM Lenses Altura Photo lens hood shades the end of the lens preventing unwanted light and flares, those cirlcles of light that appear in your pictures when a strong light source is just outside the frame. Handy reversible design allows you to attach the hood in reverse for easy storage in your bag. Made of high impact plastic for an extremely solid and lightweight feel. Backed with DigitalGoja 90-Day 100% Satisfaction Guarantee.