The IMAX version of was shot using specialized cameras and features a unique aspect ratio, optimized for IMAX's massive screens. This results in:

Roughly one hour of the film was shot with 70mm IMAX cameras. In the IMAX version, these scenes expand vertically to fill more of your screen (1.78:1 ratio), providing up to 40% more image than the standard widescreen (2.39:1) version.

The Ultimate Way to Watch Interstellar : Why the IMAX Version is Unbeatable

for scenes shot on 70mm IMAX film. This mimics the theatrical IMAX experience, though true theatrical IMAX has an even taller 1.43:1 ratio. Resolution & Detail