Disney and IMAX announced a partnership that will see several Marvel movies in IMAX Expanded Aspect Ratio format for Disney Plus. On November 12th, 13 MCU movies will be upgraded to IMAX Enhanced, including Shang-Chi, the Legend of the Ten Rings and other MCU films.
IMAX uses a square format of 1.43:1, but the Expanded Aspect Ratio (1.5:1) is very close to the ratio of 16:9 on TVs. Marvel movies are presented in a wider, letterboxed aspect ratio. However, many of them use some 1.90:1 sequences that were captured using IMAX-certified cameras to produce a taller picture in IMAX theatres. The format was used for Avengers: Infinity War, and Endgame.
Black Widow has 22 minutes of IMAX Expanded Aspect Rate footage. These scenes will take up more screen space when you watch them on Disney Plus. The black bars will therefore be smaller. DTS surround sound will be added to the IMAX Enhanced label.
Here's the complete list of MCU movies to be certified as IMAX Enhanced by November 12th.