The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 300-600mm f4 and the Canon 600mm f4.0L IS II 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. Sigma 300-600mm f4 is the longer of the two lenses at 470mm. The Canon 600mm f4.0L IS II USM with a length of 449mm, is 21mm shorter. On the other hand, the Canon 600mm f4.0L IS II USM has a larger diameter of 168mm compared to the Sigma 300-600mm f4's 167mm 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 600mm f4.0L IS II USM weighs 3920g, 1% (50g) lighter than the Sigma 300-600mm f4's weight of 3970g.
Filter Threads
The Sigma 300-600mm f4 has a filter size of 41mm whereas the Canon 600mm f4.0L IS II USM has a 52mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 41mm filters that we recommend you to consider for the Sigma 300-600mm f4:
And these are the 52mm filters that we recommend for the Canon 600mm f4.0L IS II USM:
Lens Mounts
The Sigma 300-600mm f4 has the Sony E lens mount whereas the Canon 600mm f4.0L IS II USM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Sony FX5, Sony A7R VI and Sony A7 V for the Sony E 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 300-600mm f4 is also available in the Leica L mount.
Focal Range
Sigma 300-600mm f4 has a focal range of 300-600mm and
2.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
450 - 900mm.
On the other hand, the Canon 600mm f4.0L IS II USM is a prime lens with fixed focal lenght of 600mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 960mm.
