Visible crew/equipment: As the talking trees throw their apples at Dorothy and the Scarecrow, look closely at the upper right hand side of the screen. An off camera crew member is shaking one of the trees back and forth as all of the others stand motionless. (00:40:20)
When the Scarecrow says, "I guess that did it," the tree at the right is shaking back and forth (it's not a talking tree). There is no crew member visible, but the OP specifically says that the crew member is "off camera." I think what the OP might actually be trying to get at is... why exactly would a tree unnaturally shake like that while the other trees around it stand still? It shouldn't. That's just odd. But then this should probably be a revealing mistake, not "Visible crew/equipment."
