I use a film format known as "Type 120". The cameras I use (Hasselblad 503CW, Bronica SQ-Ai, Yashica Mat-124G, Rolleicord V) allow to take 12 frames per roll. This makes you to think carefully and arrange every frame before you push a shutter button. No "rapid fire" like many digital photographers tend to use for getting pictures in hope that "at least one frame from several hundreds MUST be good".