When you watch on episode of an older TV show (typically sitcoms from the 70s), why does the camera quality in the opening sequence where they typically pan the city where it takes place look like it was shot 20 years before the TV show. The intros are all grainy and fuzzy, and the actual show is crisp and clear (for its time period). Im talking about the sequences like you would see in Chico and The Man, What's Happening, All in the Family, Sanford and Son, and Good Times, and even some shows in the 80s like Diffrent Strokes, Taxi, and The Jeffersons. Here are some examples:
Why didnt they use the same camera quality for both the title intro/credits and the shows