77mm Pro series Multi-Coated High Resolution Digital Ultraviolet Filter For Canon EF 17-40mm f/4L USM Lens, Canon EF 24-105mm f/4L IS USM Autofocus Lens, Canon EF 24-70mm f/4L IS USM Lens This ultimate clear uv filter will not affect color balance. It protects lenses from expensive front element damage Reduces lens flare and ghosting Microfiber Cloth 77mm HD Filter