In the scene where Harry has just seen the memory of the court, and gets back to the "real", Dumbledore is standing next to the Pensieve. He's standing up straight, and when Harry walks towards the Pensieve to look into it, he's not looking at Harry. However, in the next shot (in which Dumbledore's sentence starts with: "You see, Harry..."), Dumbledore leans towards Harry. Also, he's holding his wand in his right hand.