Reddit’s member ‘HowieGaming‘ has shared some comparison screenshots between Star Wars: Battlefront’s low and ultra settings. This comparison is based on the open beta build that will be available to everyone on October 8th, therefore it’s not certain whether the final build will have identical differences.
And, to be honest, the differences are really minimal in this case. I mean, you will spot some differences here and there but the game looks quite good even on Low settings.
Low images are on the left whereas Ultra images are on the right.