Canon offers high-quality zoom lenses.
Deciding on a focal length for a zoom lens depends on whether you are shooting low-light sports or are in need of a longer reach to capture distant wildlife. When comparing Canon's 70-200 mm lens to its100-400 lens, consider their key distinctions.
Focal Length
The Canon EF 70-200mm f/2.8 L IS II is the most common zoom lens used by professionals. It features 18 elements in 15 groups. The Canon EF 100-400/4.5-5.6L IS has twice the maximum focal length and contains 17 elements in 14 groups.
Aperture
The maximum aperture of the EF 70-200mm is 1:2.8, while the EF 100-400 maximum aperture is 1:4.5-5.6. The 100-400 lens requires more than twice the light for a proper exposure than the 70-200 lens when shot wide open.
Other Attributes
The EF 70-200mm f/2.8 L IS II is a high-performance, general purpose telephoto zoom lens. It has a rotating and removable tripod mount collar. The long focal length of the EF 100-400/4.5-5.6L IS makes it a lens for compressed landscapes and wildlife photography. Both lenses offer image stabilization.
Tags: focal length, zoom lens, 70-200 lens, elements groups, maximum aperture
