IMAX are ruining their brand and deceiving their advocates. For those that want to know, here is a map of known “real/fake” IMAX screens, based on screen size and aspect ratio.
A green marker indicates a “real” IMAX screen, meaning a screen that is totally immersive and fills your field of vision. A red exclamation mark indicates a “fake” IMAX screen, meaning a screen that is branded “IMAX” the same as giant screens, but is not that much larger than regular movie screens, and does not fill your field of vision. OMNIMAX or “domed” screens are indicated by a purple orb shape.