Complex sentence: Such a level of involvement is not common once the director and cinematographer have become comfortable with each other, the director will typically convey to the cinematographer what he/she wants from a scene visually, and allow the cinematographer latitude in achieving that effect.
Split into simpler sentences: Such a level of involvement is not common once the director and cinematographer have become comfortable with each other. The director will typically convey to the cinematographer what he/she wants from a scene visually, and allow the cinematographer latitude in achieving that effect.