^ Thanks, Awesome job... although a simple "I cropped them" would have sufficed ;-)
But I more meant the standard 2:35:1 shots (For the iMAX shots, cropping is the only option). You must have had to crop them quite a bit? Compared to the original uncropped 2:35:1 shots from the 2D transfer.
I was contemplating something similar on a GOTG project I'm working on. I couldn't decide if I should just leave the frames at the aspect-ratio they are presented at (But enlarged to 1920 or 1280 width), or enlarge and then crop them for uniformitty like you have.