The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 70-200mm f2.8 VC USD and the Canon 70-200mm f4L IS USM for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Tamron 70-200mm f2.8 VC USD is the longer of the two lenses at 197mm. The Canon 70-200mm f4L IS USM with a length of 172mm is 25mm shorter. Besides being longer, the Tamron 70-200mm f2.8 VC USD also has a larger diameter of 86mm compared to Canon 70-200mm f4L IS USM's 76mm diameter.
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Canon 70-200mm f4L IS USM weighs 760g, 48% (710g) lighter than the Tamron 70-200mm f2.8 VC USD's weight of 1470g.
Below you can find the dimension and weight table of the 'Telephoto Zoom Lenses in Canon EF Mount for size comparison purposes.
Telephoto Zoom Lenses in Canon EF Mount for Size Comparison
Both Tamron 70-200mm f2.8 VC USD and Canon 70-200mm f4L IS USM has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Tamron 70-200mm f2.8 VC USD is also available in Nikon F (FX) and Sony Alpha mounts.