But to take that photo you still need to find the perfect tree or building, then drag some cameras out and take pictures of it. Then once it's uploaded, set up light and do some manual adjusting because that branch is just a few degrees off. And that's just one tree or building, you need thousands for a movie.
Indie movies will upload their back yard or buy stock trees, and it will show. That's what separates big budget from small budget - perfectionism and meticulous attention to the tiniest details. Computers doesn't understand beauty or emotion, so you need fine grained human control every step of the way.
It's the composition that is expensive and not the ability to perfectly reproduce reality.