Filmmaking / Directing : Clash of the Visionaries by Nicolas Scroggins

I'm slowly getting used to the fact that filmmaking is an organic process. Part of the director's job is to make all the ideas from the creative minds behind the camera correlate into one solid vision. Where is the line drawn between the directors vision and the cinematographers vision? How much advice should you take from your DP, and the others working around you, without getting carried away from your original concept?