The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon EF 70-200 F4L IS II USM and the Canon 70-300mm f4-5.6 IS USM for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Canon EF 70-200 F4L IS II USM is the longer of the two lenses at 176mm. The Canon 70-300mm f4-5.6 IS USM with a length of 143mm, is 33mm shorter. Besides being longer, the Canon EF 70-200 F4L IS II USM also has a larger diameter of 80mm compared to the Canon 70-300mm f4-5.6 IS USM's 77mm diameter.
The 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 70-300mm f4-5.6 IS USM weighs 630g, 19% (150g) lighter than the Canon EF 70-200 F4L IS II USM's weight of 780g.
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
Lens Mounts
Both the Canon EF 70-200 F4L IS II USM and the Canon 70-300mm f4-5.6 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.
Focal Range
Canon EF 70-200 F4L IS II USM has a focal range of 70-200mm and 2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 112 - 320mm.
Canon 70-300mm f4-5.6 IS USM has a focal range of 70-300mm and 4.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 112 - 480mm.