When I did college in the mid-90s, the American Advertising Federation had not yet green-lighted digital projectors. (Which was ok, because the resolution and b

When I did college in the mid-90s, the American Advertising Federation had not yet green-lighted digital projectors. (Which was ok, because the resolution and brightness at the time was pretty terrible.) So for the national contests we'd send digital artwork off to be printed as actual slides and run two synchronized projectors which would crossfade. It was tricky to set up and order the slides because they alternated across the two machines, and of course edits were impossible. We also had an entirely separate film projector for the commercials we'd made. As analog as the tech was, it was almost indistinguishable from a modern presentation in experience. Just a whole lot more gear to lug around.