The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 800mm F5.6L and the Sigma 800mm F5.6 EX DG 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. Sigma 800mm F5.6 EX DG HSM is the longer of the two lenses at 521mm. The Canon RF 800mm F5.6L with a length of 432mm, is 89mm shorter. On the other hand, the Canon RF 800mm F5.6L has a larger diameter of 163mm compared to the Sigma 800mm F5.6 EX DG HSM's 157mm 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 RF 800mm F5.6L weighs 3140g, which means it is 1760g (35%) lighter than the Sigma 800mm F5.6 EX DG HSM which has a weight of 4900g.
Filter Threads
The Canon RF 800mm F5.6L has a filter size of 52mm whereas the Sigma 800mm F5.6 EX DG HSM has a 46mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 52mm filters that we recommend you to consider for the Canon RF 800mm F5.6L:
And these are the 46mm filters that we recommend for the Sigma 800mm F5.6 EX DG HSM:
Lens Mounts
The Canon RF 800mm F5.6L has the Canon RF lens mount whereas the Sigma 800mm F5.6 EX DG HSM has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are Canon R6 V, Canon R6 III and Canon C50 for the Canon RF Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Sigma 800mm F5.6 EX DG HSM is also available in Canon EF and Sigma SA mounts.
Focal Range
Both lenses have the same focal range of
800mm and the fastest aperture of
F5.6.
