In direct response to your question, the magic of these cameras(to me) is the depth of focus (that fuzzy background, distant lights in bokeh). Low ISO is first choice (100 or multiples of 16 if possible),fast prime lenses (down to f1.4)from 16mm fisheye up to 85mm (depending on your space to shoot).The “…dramatic and cinematic…” part is really up to you and the lighting. You don’t give a lot of details on the “project”, “props” (like models?), or “shoots so far ” (indies, commercials,etc.), so I don’t have much more. No greenscreen suggested; and the 5d has the full sensor so if you need to exploit field of view, put your widest/longest lens on it. Good luck…ML