The New Avengers (1976)
0 visible crew/equipment mistake in show generally - chronological order
Starring: Joanna Lumley, Patrick Macnee, Gareth Hunt
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K is for Kill: The Tiger Awakes (1) - S2-E8
Visible crew/equipment: A Russian solder peers into a Salvation Army hall. In the shot that follows, from his point of view, there's a very obvious studio light on a tripod in shot.