The most common movie aspect ratios are 2.4 :1 2.35 :1 1.85 :1
Most peeps usen' 16:9 panels.
If we crop into that, we get, 85%, 86% and 96% of the original visible screen area.
Thoughts ? Sacrilegious ? Anti-movie-christ ? Do you crop or let be ?
Show Image
(https://i.imgur.com/RSB9WCf.gif)
Those are cinema format; anamorphic and standard, respectively.
Cinemas feel like they're about to go the way of the dodo, but cinematography is a highly conservative art with many highly established practices. Aspect ratios changing will have to lead to cinematographers effectively reschooling as framing scenes is incredibly important. I'm kind of a cinematography enthusiast and it has an extremely rich culture of terms, practices, standards and traditions that are deeply ingrained into filmmaking. This ranges from simple things like drinking champagne at slate 111 (irrespective of the time of day) to conventions of clamp and applebox sizes, camera angles, formats etc. Filmmaking is an extremely intense business that's been perfected and distilled into a near-universal practice. I don't think they'll want to move away from that any time soon.
tl;dr: it's easier to letterbox than reinvent camera techniques.