Let us address the elephant (or sandworm) in the room.

If you are downloading a digital copy of Dune (via platforms like iTunes/Apple TV, Amazon Prime Video, or Vudu), the standard download is almost always the . This is the version designed for standard home televisions and computer monitors.

Occasionally, high-end streaming services like Bravia Core (available on Sony TVs) offer IMAX Enhanced versions of films that aren't available elsewhere.

The standard 4K UHD and Blu-ray releases do not include "IMAX Enhanced" features, meaning they remain letterboxed.

What fans are usually searching for when they type "Dune IMAX ratio download" is the Open Matte version—a release where the black bars are removed, revealing the extra footage shot for IMAX.