Visible crew/equipment: In the episode where Carl is "fishy sitting" for his boss, Steve is explaining to the boss how he swallowed the fish. You can clearly see the studio lights reflected in Steve's glasses.
The Color of Truth - August 8, 1955 - S1-E7
Visible crew/equipment: The shadow of the camera is visible on the car's hood when Al is trying to convince Mrs. Melanie not to go after Sam. It lingers there for a while in the shot.
Visible crew/equipment: At the very end of the episode, as Poirot's car drives off headed to the harbor, filming equipment is neatly reflected in the door. (00:51:40)
Visible crew/equipment: As you see the surfer starting his ride the camera goes underwater, briefly revealing one or two scuba divers and a gadget (most likely a camera). (00:32:30)