When Mr. Knightley is walking to visit Emma and Emma is in the window, the position of Mr. Knightley walking toward the house does not proceed normally; as the shot cuts back and forth to him in the background, his position changes - he is closer and then further away and then closer in succeeding shots.
When Harriet Smith attends dinner with Emma for the first time, Reverend Elton enters the dining room and is introduced to Harriet. The reverend sits down and everybody proceeds to start having soup without the reverend saying grace first.