...and The Dark Knight Rises and Interstellar. The aspect ratio is determined by which scenes (or even individual shots) the director determines would be most beneficial to be shot with an IMAX camera. Since budgetary and time schedules do not allow every shot in these features to be photographed in IMAX, a mix of aspect ratios is built-in to the final product.PfR73 wrote:That's not new. It happened like that in the 2nd Transformers film, which was the one where Bay first started using the IMAX cameras. I haven't seen any since, so I can't comment on those, but the 2nd one definitely changed aspect ratio constantly from shot to shot in many sequences. Even The Dark Knight had several scenes that would switch back & forth within a single sequence.
By the way, checking on IMDb for tech info I see that they already have an extended Blu-ray cut of Transformers: The Last Knight prepared that will run forty minutes longer than the theatrical release (which already clocks in at 149 minutes).