How much of the dome’s surface did the screening take in San Jose? I mean cause if it’s only a small segment then the image doesn’t get that distorted.
There was obviously some amount of distortion and a small amount of cropping on the corners to account for the round screen, but the aspect ratio was mostly preserved (and did not shift in the way Force Awakens did). All told, a little more than half of the screen real estate was taken up by picture with letterboxing along the top and bottom edges.
The more significant quirk of the dome (or, at least that dome) is every seat is designed to immerse you in the picture so even in the back row it felt a bit like sitting in the front row of any other movie theater. Whether that’s a pro or con I suppose is up to the individual viewer.