Complex sentence: The fatboy sound blimp will support both some of the Nikon's and Canon's cameras, which means there's no need to purchase a new sound blimp when changing your camera brand/model.
Split into simpler sentences: The fatboy sound blimp will support some of the Nikon's and Canon's cameras simultaneously. Meaning you don't need to purchase a new sound blimp in case you decide to change out your camera brand/model.