Looks like a MINOX camera in the opening scenes. Used to watch this show as a kid and it got me interested in photography. One episode had Mike use a portable darkroom (foot locker) in his car. Fun show. I've spent my life as a photographer, military and civilian. Bought a Crown Graphic with my paper route earnings in the early 60s. Used that camera for 25 years. Sure the show plots are corny now but they were exciting to a pre-teen back then.
Oh, another TV photographer... Felix Unger in the Odd Couple.