The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon 24-70mm f2.8L USM and the Sigma 24-70mm F2.8 DG OS HSM 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 24-70mm f2.8L USM is the longer of the two lenses at 124mm. The Sigma 24-70mm F2.8 DG OS HSM with a length of 108mm, is 16mm shorter. On the other hand, the Sigma 24-70mm F2.8 DG OS HSM has a larger diameter of 88mm compared to the Canon 24-70mm f2.8L USM's 83mm diameter.
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. Canon 24-70mm f2.8L USM weighs 950g, which means it is 70g (6%) lighter than the Sigma 24-70mm F2.8 DG OS HSM which has a weight of 1020g.
Below you can find the dimension and weight table of the Standard Zoom Lenses in Canon EF Mount for size comparison purposes.
Standard Lenses in Canon EF Mount for Size Comparison
Filter Threads
The Canon 24-70mm f2.8L USM has a filter size of 77mm whereas the Sigma 24-70mm F2.8 DG OS HSM has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Canon 24-70mm f2.8L USM:
And these are the 82mm filters that we recommend for the Sigma 24-70mm F2.8 DG OS HSM:
Lens Mounts
Both the Canon 24-70mm f2.8L USM and the Sigma 24-70mm F2.8 DG OS HSM 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 24-70mm F2.8 DG OS HSM is also available in Sigma SA and Nikon F (FX) mounts.
Focal Range
Both lenses have the same focal range of
24-70mm and the fastest aperture of
F2.8.