I see that in the terms of use general media use is okay, but not cinema, who can I contact about clearances using Sentinel imagery in a cinema documentary? Who can advise us on methods for finding the best imagery for our subject? Regular hi-res TIFFS work, but we are searching for the exquisite and unusual in South-East Asia
You can always contact us at info@sentinel-hub.com for additional clearance.
In terms of finding best imagery I would suggest you contact:
https://twitter.com/Pierre_Markuse
https://twitter.com/annamaria_84
https://twitter.com/MarkWalters_
(these are just a few twitter users, who regularly publish good images)