One of the finest telephoto zoom lenses in the EF line, optically comparable to a prime lens. Four UD-glass elements to correct chromatic aberrations and multiple zoom groups allow internal focusing, resulting in high image quality throughout the zoom range. Compatible with Extender EF 1.4x and 2x.
Shooting in low-light conditions is possible thanks to the lens' fast maximum aperture of f/2.8, which stays constant throughout the zoom range. Such an aperture also gives control over depth of field.
Super Spectra coatings ensure accurate colour balance and enhance contrast. They also reduce flare and ghosting – a common problem caused by light bouncing off a camera's sensor.