Description

Canon's tiny 40mm f/2.8 lens gives full-frame coverage in a lens that's less than an inch thick. The STM designation means it's ready for autofocus in both photo and video. It accepts 52mm filters, and close-focuses to one foot. While primes like the 50mm f/1.8 and 35mm f/2.0 are faster, the 40mm f/2.8 is a great lens choice when you need a small size, or video autofocus.