Right before saying he lost his spurs, Wes (Jack Nicholson) is shown carrying them, then not carrying them (and the spurs are nowhere in sight as he is not wearing them either), then carrying them again, then being shot at and dropping them.
In the first shot of the film, Joe appears on the left side of the screen and Dick on the right, both seen from their back. The subsequent long shot, from the front, shows them switched.
Between two shots of the stagecoach passing through a zigzag piece of road, there is a shot showing the horses galloping, from the point of view of the driver, in a different piece of road.