Doug asks for, and receives, his photographs from the store clerk. Doug simply walks away with the items without paying for them, and the clerk does not ask for payment. This occurs at the 13:05 minute mark in this episode.
(at around 9 mins) Doug and Carrie taking a SCUBA class at the pool. As Doug goes under water for a prolonged period the camera cuts to Carrie and the camera crew is visible on the pool deck in the background.
In the pool scene right after Doug goes underwater the camera goes to Carrie , also in the pool, looking over her shoulder at him, at the 10:28 mark, and to the left you can see clearly the camera and next to that one of the crew laying on his side.