A quick introduction of the fam from left to right:

Admittedly, these are shown in a stripped down configuration to highlight the progression in size and wield.

Normally we have the Leica outfitted with the Leica Handgrip 19505+hood, the 5D Mark III with the Canon BE-E11 battery grip (which makes it nearly as large as the EOS 1DX Mark II but still signiticantly lighter) and everything hooded and strapped.