When Ross looks up to see Lady Macbeth on the top of the stairs and begins walking up toward her; his arms are straight down by his sides. However, in the following cut his arms change orientation and are now slightly bent with his hands near his hips.
When Banquo and Fleance prepare to leave, Macbeth tells them their horses are ready. But Denzel Washington gets the line backwards. He says, "I commend them to your backs," instead of "I commend you to their backs." He speaks of plural horses, but in the next shot, Fleance is riding the only horse, and Banquo is walking.