When Elliott walks in with the new camera lens and shows it to Dennis, the lens is in a white box. Elliott takes the top half of the box off and shows Dennis the lens in the lower half of the box. In the next scene, Elliott is holding just the lens and the box has disappeared.
When Jesus goes to Nina to thank her for the money, he calls her "señorita." Given her age and status, Jesus most likely would have addressed her as "señora."