To get the highest quality digital version, you should look for "4K UHD" listings on major platforms. Note that availability of the shifting IMAX aspect ratio can vary by store:
If you buy a physical copy, you can often redeem a digital code here to watch across multiple devices. Technical Specifications for the Ultimate View
In a theater, these expand to a nearly square 1.43:1 ratio. Interstellar Imax 4k Download
On the 4K Ultra HD Blu-ray and certain digital downloads, these IMAX sequences expand to 1.78:1 (16:9), completely filling your modern widescreen TV and providing significantly more visual detail than the standard version. Where to Download Interstellar in 4K
Offers the 4K version for purchase, though users sometimes report it being locked to a fixed widescreen ratio depending on the specific license. To get the highest quality digital version, you
If you are looking for the absolute best quality to justify a 4K download, aim for these specs:
Shot on 35mm film with a wide 2.39:1 ratio. On the 4K Ultra HD Blu-ray and certain
When you watch Interstellar in a standard theater or on most streaming platforms, the image stays in a fixed "letterbox" widescreen format (2.39:1). However, Nolan filmed roughly one-third of the movie using massive 70mm IMAX cameras.
Often regarded as the best digital version due to its high bitrate and inclusion of Dolby Vision (which is not available on the physical disc).