From ultra-wide angle zoom on full-frame cameras or a standard zoom on DSLR's with APS-C sensors, on which this lens delivers 28-70mm equivalent.
Maintaining a f/4 maximum aperture means there is no need to vary shutter speed or ISO as you zoom.
Super Spectra coating on the elements ensures colour balance and minimises ghosting and flare to ensure you'll be proud of your image quality.
L-series is Canon's flagship professional lens range and EF 17-40mm f/4L USM delivers with its precision-designed EF optics.
Claiming the Canon Light Awards 2016 Grand Prize, Alistair McBurnie embarked on an African photography adventure with the Canon Collective. Read his story here.
Acclaimed conflict photographer and Canon Master, Stephen Dupont, illustrates the scene behind one of his prized war-time images from Badakhshan.
Kim Tucci knows about the importance of capturing life with babies better than most—she has five of them! Kim’s the mum of one-year-old quintuplets with three older siblings
Start printing and displaying your photos to give any area of your home or office a fresh new look with our print inspiration series.
Jason Grant reveals how to find your decorating style in images.
Let your photos tell a story with wall art tips from Jason Grant.
Discover how to use your photography to make your child's room their own special space.
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