Engadget
The difference between Shot with IMAX and Filmed for IMAX

"Shot with IMAX" means a film was captured using IMAX’s 15-perf 65 mm cameras, producing a 1.43:1 image that can be projected on IMAX 70 mm prints. "Filmed for IMAX" is a broader production workflow that may use IMAX-certified digital or film cameras, with post-production optimization for IMAX theaters and variable aspect-ratio expansion. Christopher Nolan’s *The Odyssey* exemplifies a film shot entirely with IMAX film cameras and also part of the “Filmed for IMAX” program.