Canon EF 17-40mm f/4 L USM 28-70mm High-performance telephoto zoom lens for

High-performance telephoto zoom lens for use with FX-format SLRs

An ISO range of 100-25600

The lens also has an A/M mode that prevents accidental switching when it is in autofocus mode

a Hyper Sonic AF motor provides fast

It's easier and more convenient than ever to share movies and photos

Canon EF 17-40mm f/4 L USM 28-70mm High-performance telephoto zoom lens forCanon EF 17 40mm f 4 L USM Lens Front and rear Lens caps Lens hood Lens caseThe Canon EF 17 40mm f 4 L USM Lens is a lightweight, ultra wide angle Canon EF zoom lens. It is particularly well suited for use with digital EOS SLR cameras with a focal length conversion factor higher than 1. It is also designed to work perfectly with all other EOS models. The EF 17 40mm f 4 L USM is aimed at professional and advanced SLR EOS camera users. Although it is an