StarThoughts said:

I have to admit that I hate how this practice has been implemented. It wouldn't be so bad if once the decision was made to make part of a sequence in IMAX, then the entire sequence should be, and not be made up of shots filmed in both formats.

The IMAX version of Interstellar is a perfect example. Don't get me wrong, what shots they chose to present in IMAX were certainly breathtaking, but parts feel a bit more fragmented than they should because of the shift from 35 millimeter to IMAX, which effects not just the aspect ratio, but the resolution, brightness and saturation of the image. It was very distracting to myself, and several people I saw the film with, some of whom were not cinéasts.

Agree with your opinion there

It's annoying where an entire sequence is not formatted for IMAX and instead it's just select shots that last only a few seconds

Tron Legacy and Hunger Games were good examples of the shifting ratio technique IMHO as they had entire seqences displayed