The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon EF 70-300 F4-5.6 IS II USM and the Sigma 150-600mm F5-6.3 DG OS HSM C 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. Sigma 150-600mm F5-6.3 DG OS HSM C is the longer of the two lenses at 290mm. The Canon EF 70-300 F4-5.6 IS II USM with a length of 146mm, is 144mm shorter. Besides being longer, the Sigma 150-600mm F5-6.3 DG OS HSM C also has a larger diameter of 121mm compared to the Canon EF 70-300 F4-5.6 IS II USM's 80mm diameter.
Below you can find a scaled side-by-side image of Canon EF 70-300 F4-5.6 IS II USM and Sigma 150-600mm F5-6.3 DG OS HSM C to get a better idea of how their sizes compare in real life.
Comparison image of the Canon EF 70-300 F4-5.6 IS II USM and the Sigma 150-600mm F5-6.3 DG OS HSM C Size and Weight 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 EF 70-300 F4-5.6 IS II USM weighs 710g, which means it is 1220g (63%) lighter than the Sigma 150-600mm F5-6.3 DG OS HSM C which has a weight of 1930g.
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 70-300 F4-5.6 IS II USM and the Sigma 150-600mm F5-6.3 DG OS HSM C 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.
Sigma 150-600mm F5-6.3 DG OS HSM C is also available in Nikon F (FX) , Sigma SA and Sony Alpha mounts.
Focal Range
Canon EF 70-300 F4-5.6 IS II 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.
Sigma 150-600mm F5-6.3 DG OS HSM C has a focal range of 150-600mm and 4.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 240 - 960mm.