Workflow and output consistency. It is onerous to get ‘motion cam’ footage to mix in with video from different programs seamlessly, and it is simpler for big productions to only use one digicam/mount.
Now, whether or not or not there’s actually that a lot name for a VR fisheye to be built-in with different footage, from a cinema physique… eh, nicely, that is why this might be a really costly, limited-production L lens unlikely to even be stocked by any ‘common’ store, and never marketed or meant to be bought to most people.
