Consider this sequence of a person walking through a door:

Shot 1 – A wide shot of an actor approaching a door.

Shot 2 – A closeup of the door handle and a hand reaching out to grab it.

Shot 3 – A medium shot of the hand pulling the door open and the person walking through.

Shot 4 – A reverse angle from inside the door showing the character entering the new room.

Shot 5 – A wide shot showing the door close and the character established in the new room.