Captain America: The First Avenger (2011)
First CGI body replacement
4K HDR video
CGI making of video
1) Chris Evans and Sebastian Stan (who played pre-captain America) are about the same height. A camera trick (not CGI) made Captain America look much taller than Bucky Barnes.
2) Shields made from different materials were used depending on what was needed for the shot. Rubber shields were used for when Captain America punches people with it. For scenes where he put the shield on his back, magnets were used to keep it in place. In many of the scenes where he is seen throwing the shield, Chris Evans would mime out the actions of catching and throwing the shield, with the shield being added later, using CGI.
3) Paul Warren (an experienced film double and actor, mostly known for roles wearing prosthetics) was used in pre-production to help develop the "Skinny Steve Rogers" effect by CGI supervisor, Christopher Townsend, as well as one of the "Skinny Steve" on set stand-ins. English Shakespearean trained stage actor, Leander Deeny, was used as the on set as the "Skinny Steve" double when Chris Evans was sitting or lying down, or when a minimum of physical movement was required.