My high school senior photos were shot in a studio on sheet film. If I recall correctly (big if) it was 5x7. The prints were color, but I have no idea if it was negative or positive film. I knew next to nothing about photography at the time, but I loved shooting my 126 instamatic. I'd never seen or even heard of view cameras or sheet film or sheet film holders before. I recall grilling the photographer constantly throughout my sitting.