The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon 100-400mm f4.5-5.6L IS II USM and the Sigma 150-500mm F5-6.3 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. Sigma 150-500mm F5-6.3 is the longer of the two lenses at 252mm. The Canon 100-400mm f4.5-5.6L IS II USM with a length of 193mm, is 59mm shorter. Besides being longer, the Sigma 150-500mm F5-6.3 also has a larger diameter of 95mm compared to the Canon 100-400mm f4.5-5.6L IS II USM's 94mm 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 100-400mm f4.5-5.6L IS II USM weighs 1590g, which means it is 190g (10%) lighter than the Sigma 150-500mm F5-6.3 which has a weight of 1780g.
Filter Threads
The Canon 100-400mm f4.5-5.6L IS II USM has a filter size of 77mm whereas the Sigma 150-500mm F5-6.3 has a 86mm 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 100-400mm f4.5-5.6L IS II USM:
And these are the 86mm filters that we recommend for the Sigma 150-500mm F5-6.3:
Lens Mounts
The Canon 100-400mm f4.5-5.6L IS II USM has the Canon EF lens mount whereas the Sigma 150-500mm F5-6.3 has the Pentax KAF3 lens mount. Some of the latest released cameras that are compatible with these mounts are Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount and Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF3 Mount.
Sigma 150-500mm F5-6.3 is also available in Canon EF , Nikon F (FX), Sony Alpha and Sigma SA mounts.
Focal Range
Canon 100-400mm f4.5-5.6L IS II USM has a focal range of 100-400mm 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
160 - 640mm.
On the other hand, the Sigma 150-500mm F5-6.3 has a focal range of 150-500mm and 3.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 225 - 750mm.
