Visible crew/equipment: In the scene where the group enters the weird elevator with the escher wallpapered walls when the shot looks from the back of the elevator you can see the shadow of the camera/light reflector on Mr. Salt.
Visible crew/equipment: When Wonka finishes handing out the Everlasting Gobstoppers, you can see the shadow of the cameraman on Wonka as he walks away.
Visible crew/equipment: There is a cameraman shooting near the gate of Wonka's factory: he is strategically placed to get up close shots shown in the movie yet he blends in to the crowd to make the movie audience think he is one of the many media technicians filming the event of Wonka opening his factory. Later, when the guests are passing through the gate, the cameraman has disappeared.
Visible crew/equipment: White microphone equipment is visible in Mr. Beauregarde's shirt pocket throughout the movie. This is particularly noticeable when he tells Wonka not to talk to him about the contract.
Visible crew/equipment: In the invention room, Veruca's dad talks to Wonka. The camera gets close to them. On the bottom of the frame is either a shadow of the camera or the boom mic.
Visible crew/equipment: When everybody first comes in the main room with the chocolate river, there is a shot of all of them standing in the doorway. At the bottom of the scene is the shadow of the camera.
Visible crew/equipment: In the Fizzy Lifting Drink scene, as Wonka leaves the room, a bubble machine is just visible at the bottom left of the screen.
Suggested correction: The Cameraman is part of the news crew that was filming the event all around. Not a mistake.
The point being is that the cameramen in the crowd are part of Director Mel Stuart's film crew, getting angles and footage of the crowd for the movie without hiring additional crews to get the same shots.
Scott215
How do we know that, though? How do we know this wasn't an extra with a non-working prop meant to be one of the crowd cameramen? Seems like a big assumption to make without the director confirming this was a trick of his.
Because of the camera angles and shots of the crowd that could only be achieved from Stuart's film crew, who are posing as news crews at the event, that's how we know.
Scott215