Canon EF 16-35mm F/2.8L II USM vs Canon EF 24-70mm F/2.8L II USM — Which Is Better?

The Canon EF 16-35mm F/2.8L II USM and the Canon EF 24-70mm F/2.8L II USM are both L-series full-frame zooms for Canon EOS cameras, built for very different photographic jobs. The 16-35mm, introduced in 2007, is the wide-angle choice for architecture, interiors and sweeping landscapes. The 24-70mm, introduced in 2012, covers the classic standard range for events, portraits and walk-around shooting. Both keep a constant f/2.8 maximum aperture across their zoom range, so neither loses light as you zoom.

The 16-35mm is the lighter lens for travel and long walking days, weighing 635 g against 805 g for the 24-70mm, a difference of 170 g. Their other dimensions are close, with both measuring 89 mm in diameter and lengths within 1 mm of each other. Both take 82 mm front filters, so the same polariser or ND filter threads directly onto either lens.

The 16-35mm fits tight interiors, tall buildings and wide vistas at its 16 mm end, while the 24-70mm reaches to 70 mm, twice as far, for tighter portraits and detail shots. That focal range difference is the real decision between them. Both offer autofocus with a manual focusing ring, so you can fine-tune focus by hand when it counts, and both keep a constant f/2.8 aperture for handheld work at any focal length.

The 16-35mm focuses closer, at 28 cm against 38 cm for the 24-70mm, which helps when photographing near foregrounds or environmental details. Their maximum magnifications are similar at 0.22x and 0.21x. The 16-35mm also uses an internal zoom, so the barrel does not extend while zooming, while the 24-70mm extends as you zoom.

The 24-70mm has two useful extras for working shooters. A fluorine coating on the front element helps repel dirt and smudges and makes cleaning easier after a dusty or fingerprint-prone shoot. It also has a zoom lock that keeps the barrel from creeping when the camera hangs from a strap. The 16-35mm offers neither. Both lenses are weather sealed and support front filters, and neither offers image stabilisation or teleconverter compatibility.

The 24-70mm has the larger optical formula, with 18 elements in 13 groups against 16 elements in 12 groups for the 16-35mm. It also carries a super-low-dispersion element, which the 16-35mm design does not include. The two lenses otherwise share their key special-element counts, each with one aspherical element and one low-dispersion element.