Revealing mistake: In the sidewalk scene, after one of the robbers leaves the bank and dives into the car, and it drives towards Harry, you can see a wire rope that appears to have been used to either stop the car from going too far or has been used to help roll the car. (00:02:07)
Continuity mistake: The scenes at the quarry were obviously filmed on different days. When the kid is being held hostage, the sky in the background is different from what it was minutes ago.
Other mistake: Due to the way the opening titles were created, likely with an optical printer on plastic or glass, dust or other particles are very visible when they fade into the shot.
Answer: Yes the binoculars are upside down.