The Diving Bell and the Butterfly is a great film to watch strictly for the cinematography. Each of the attributes of cinematography are used to the fullest to give the film some depth just through visuals.
The framing from the very beginning of the film acts as if we're in the body of Mr. Bauby. By canting the frame and not letting the viewer see everything in the room, the framing gives the viewer a sense of presence. It's as if you're actually "locked-in" to this view of the movie and every scene you wish you could get out of it.
The depth of field in the opening scene is shot with an obscure focus that almost puts us in the shoes of the character. The majority of the film is shot from the point of view of Jean Bauby and the focus helps to show us exactly what he's looking at.
Color in this film is extremely important and progresses throughout the film. When you are in the reality of Bauby's life, the colors are more dull and less exciting. On the other hand, the flashbacks are full of vibrant colors.
There is a lot of variation with the movement in this film. It goes back and forth between the picture moving and the actual camera moving. When you're in Bauby's perspective it's mostly the picture moving but, in the flashbacks it's both the camera and the picture.