The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 800mm F11 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 F11 with a length of 281mm, is 240mm shorter. Besides being longer, the Sigma 800mm F5.6 EX DG HSM also has a larger diameter of 157mm compared to the Canon RF 800mm F11's 102mm 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 F11 weighs 1260g, which means it is 3640g (74%) lighter than the Sigma 800mm F5.6 EX DG HSM which has a weight of 4900g.
Filter Threads
The Canon RF 800mm F11 has a filter size of 95mm 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 95mm filters that we recommend you to consider for the Canon RF 800mm F11:
And these are the 46mm filters that we recommend for the Sigma 800mm F5.6 EX DG HSM:
Lens Mounts
The Canon RF 800mm F11 has the Canon RF lens mount whereas the Sigma 800mm F5.6 EX DG HSM has the Sigma SA 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 Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill for the Sigma SA Mount.
Sigma 800mm F5.6 EX DG HSM is also available in Canon EF and Nikon F (FX) mounts.
Focal Range
Both lenses have the same focal range of
800mm but while Canon RF 800mm F11 has the fastest aperture of
F11, the Sigma 800mm F5.6 EX DG HSM's widest aperture value is
F5.6.
