Canon RF 100-400mm F5.6-8 IS USM

Canon RF 100-400mm F5.6-8 IS USM Review

The Canon RF 100-400mm F5.6-8 IS USM is one of the more affordable telezooms available, but its relatively dim maximum aperture makes it a better choice for use outdoors than under artificial light. The Canon RF 100-400mm F5.6-8 IS USM ($649.99) is an ideal lens for photographers interested in capturing telephoto subjects—such as wildlife, team sports, and other distant action—but who aren't able to afford the pro-grade RF 100-500mm F4.5-7.1 L IS USM ($2,699). The 100-400mm offers enough zoom power that you can snap shots of backyard critters, while remaining light enough for walks and travel. You miss out on some L series features such as weather sealing, but images are sharp, the autofocus is sound, and its stabilized optics make handheld photography easy. The RF 100-400mm is another strong midrange entry for creators using the EOS R system.Midrange Telezoom The RF 100-400mm measures 6.5 by 3.1 inches (HD) and weighs a mere 1.4 pounds; both are very reasonable given its full-frame coverage and telephoto reach. Its construction is decidedly mid-grade—Canon uses sturdy polycarbonate (not cheap plastic) for the barrel and tolerances are tight all around. You miss the weather p...