Guerrillas in the Mist
Member
That's because it films real locations instead of a green color on the wall.
It wasn't just the green screen though, the prequels (especially EP II and III) were incredibly boring in terms of shot composition and editing. Almost every dialogue heavy scene was exactly the same: master shot of characters chatting while walking to establish the elaborate "set", followed by static closeups of each as they delivered their lines.
There was more energy in the camera work seen in TFA's teasers than the entire prequel trilogy.