let me just tell you briefly about these amazing camera shots and their symbolism:

shot #1: Thor and Loki as kids are equal with their father almost out of reach for the both of them (his face is out of the shot) - though they are standing next to each other, still Odin is the one separating them.

shot #2: Odin still separates them,they still are inferior, even though they both have grown to match him (you see Odin fully). However while Loki faces him (yearning to live up to his father’s expectations), it is him Odin shows his back, while his left shoulder is pointed to Thor his true son and only heir, who is not able to look at his father due to his conflict towards him. The brothers now start to turn their backs on each other: the beginning of their paths parting.