The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 70-300mm F4-5.6 DG OS 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 a crucial factor to consider when comparing two lenses. Canon 70-300mm f4-5.6 IS USM is the longer of the two lenses at 143mm. The Sigma 70-300mm F4-5.6 DG OS with a length of 126mm, is 17mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 77mm.
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Sigma 70-300mm F4-5.6 DG OS weighs 610g, which means it is 20g (3%) lighter than the Canon 70-300mm f4-5.6 IS USM which has a weight of 630g.
Filter Threads
Both the Sigma 70-300mm F4-5.6 DG OS and the Canon 70-300mm f4-5.6 IS USM have the same Filter thread size of 58mm.
Below are links to the 58mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Sigma 70-300mm F4-5.6 DG OS has the Sigma SA lens mount whereas the Canon 70-300mm f4-5.6 IS USM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill for the Sigma SA Mount and Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Sigma 70-300mm F4-5.6 DG OS is also available in the Canon EF , Nikon F (FX), Pentax KAF3 and Sony Alpha mounts.
Focal Range
Both lenses have the same focal range of
70-300mm and the fastest aperture of
F4.0 - F5.6.
