Did you do IMAX, LieMAX or just regular?
3D LieMAX. The film constantly shifted from 2.35:1 to 1.85:1 with the occasional 3D pop-out effect emerging from the 2.35:1 letterboxing. Pretty much every scene on Ego's planet expanded to fill the 1.85:1 frame and most if not all of the space scenes as well.
Interior shots and other planets were mostly 2.35:1.