Revealing mistake: As Sharsted enters Gingold's apartment, he enters directly from the sunlit outdoors. The interior shot of Gingold's does not show the outdoors when the door opens, but a darkened interior movie set.
Night Gallery (1970)
1 revealing mistake in Camera Obscura - chronological order
Starring: Joanna Pettet, Rod Serling, Larry Watson, Matt Pelto
Continuity mistake: The shots of Doran from his left rear shows him a couple feet away from the wall while frontal shots show him backed up against the wall.
Rod Serling: Good evening, and welcome to a private showing of three paintings, displayed here for the first time. Each is a collectors' item in its own way - not because of any special artistic quality, but because each captures on a canvas, and suspends in time and space, a frozen moment of a nightmare.
Trivia: The scene of the spooky castle on the rocky shore was used in episodes of "Gilligan's Island" featuring Vito Scotti as mad scientist Boris Balinkoff.