I respectfully disagree with your statement of slide film has much higher dynamic range. While I do love the sharpness of slides and how how they glow on your light box, color neg has higher dynamic range. When I shot for commercial clients, I don't know how many Polaroids I shot to make sure that I filled in shadows enough and gobo'd off the highlights to make sure that they aren't blown out. Pros shot chromes because art directors like to see positives for color balance and it's much easier to view without proofing. If you over expose highlights on color neg film, there's still data. Highlights are denser if you over expose them. If you over expose highlights on slide film, no data for scanning. Correct me if I'm wrong.