As the lights in the theater went down and the scene began to play, the changed frame rate wasn’t immediately noticeable.
Everything changed, however, when a sound caused Henry to jolt up, and I noticed the complete lack of motion blur present.
Suddenly I experienced what can really only be described as the sensation of a sort of light switch click in my brain as my eyes were forced to quickly adjust to what felt like a wholly new visual presentation.
As Henry raced around the screen warning his friends (Mary Elizabeth Winstead, Benedict Wong) about an impending attack by a character we later learn is a younger clone of himself, I practically had to shake my head while trying to acclimate myself.