I'm liking the Zeiss, because they are purist primes - optimized for manual use, with long throw, precision focus.
There is no denying the Canon glass is sexy. And highly recommended.
I used to think 1.2 was a full stop faster than 1.4, but Wikipedia says only a half stop.
I'd appreciate comments by anyone with a working knowledge of these lenses.
FWIW - I just bought a Canon 90mm f2.8 T/S. That purchase was driven by stills application, but obviously the lens could be used for video as well. On one level, it is hard to justify another +$1K lens in my kit at 85mm, but the lure of superspeed primes is undeniable.