Ironically, my mom bought me this for Christmas. I'd seen it before but, due to Vilmos Zsigmond's recent passing, I thought it was time to re-watch it. It is one of those documentaries that all film-makers should see. Their respective artistry lay in the simplicity of their approach. But the documentary - and Vilmos himself - state that they were both in the right place at the right time. And that's really true if you look at the pool of talent you had back in the 60s & 70s. Granted, this was during the fall of the studio system and the beginnings of an independent film movement. But you had directors, actors & cinematographers willing to take all sorts of risks to create an entirely new grammar.
Anyway, check it out if you haven't already seen it. It's about the time period just as much as it is Laszlo & Vilmos. Great stuff.