Capture striking architecture and expansive landscapes with this ultra-wide-angle L-series lens Shoot hand-held and in low light conditions with a fixed aperture of f/4 Get closer to your subjects with 0.28 m focusing distance through the entire zoom range Ensure accurate colour balance and enhance contrast along with reduced ghosting and flare with Super Spectra coating Produce sharp, high-contrast images with Super UD (ultra-low dispersion) elements to suppress chromatic aberrations Be prepared for split-second moments with a fast, responsive Auto Focus with Ultra-Sonic Motor (USM) Use specialised filters, such as polarisers and graduates with ease thanks to the non-rotating lens Compatible with all DSLR cameras including full frame and EOS M mirrorless with an EF-EOS M Mount adapter The EF 17-40mm f/4L USM Lens is an ultra-wide-angle lens producing stunning clarity in a range of focal lengths. Its compact, lightweight body makes it an ideal travel companion - suited to interiors, ar