It’s stunning. Have you seen Welles’ Othello? There is also a dvd of Ian McKellan & Judi Dench’s Macbeth from the 1970s available. It is mindblowing.
I love Olivier’s Shakespearean movies, especially Henry V. He’s one of the few artists to acknowledge on film that Richard the Third is not history but just great drama.
Branaugh’s Hamlet, the four hour version, is visually magnificent, but it is a serious marathon. Though since it was shot in 65mm (with the short version in 35mm), it is a film that could be shown in an IMAX to see its full glory.