During the golden age of Hollywood, film studios came under three categories, A studios, such as Warner, M.G.M; B studios, such as Columbia, Republic, Universal, and those described as Poverty Row. It might surprise you to know that in the 1930s the top of the A list of studios was R.K.O; yet their films always have the look of a B movie about them. Universal Films were only saved from bankruptcy by the popularity of Abbott & Costello: Universal Studios films have the sharpest images of any that I have seen, and they produced most of those wonderful Audie Murphy westerns. I don't know whether Columbia ever climbed the ladder to be regarded as an A studio, but they produced those wonderful Harryhausen films, and in 1962 produced 'Damn the Defiant' at their British studio, which was the equal of anything put out by Warner's in the 30s.