Now, I have to - in my defense, I have the say that general knowledge of the deadly nature of cigarettes was not primarily in my mind and nor was it on these poor cowboys, who - many of whom who've died of emphysema since we were shooting.

When people have problems with their mortgages and jobs many feel they're a failure, they didn't work hard enough or speak well enough: It's their fault things are going so bad. When they see their bodies right there [at occupations], we have something profoundly in common.

From my image of digging around in the mud like a grunt, I preferred fighting the war from ships.

Well, of course the general idea was dreamed up by the advertising agency and so my job was to realize that. And we down to Lubbock, Texas, usually and onto a ranch and we would pick cowboys who looked the part and photograph them under dramatic situations - rounding up wild horses or running through streams and then reaching in and taking a drag on a cigarette.

When I started, we had just the camera and the person, mostly. And if you wanted to do a dolly shot, particularly working in Chicago where I began, you'd get in the back trunk of a car, and you'd have a friend drive the car, or you'd get in some kid's little wagon that he plays with and have someone pull that for dolly shots.

There was no actually stock footage in "Medium Cool." I wrote the script. I wrote the riots. And I integrated the actors in the film in the park during the demonstrations. But nowhere was it like we had stock footage and then later, in editing, integrated it into the film. It was all done at the time.

I think that the whole voyeuristic attitude of filmmakers or of me personally - of shooting documentaries and so forth - is an important issue. And it was an important issue to me, personally. And the whole question of when - when do you put the camera down or when do you keep shooting to get the shot. And a number of times in my life I've had that question hit me very hard.