If you can ignore the clutter on my desk you can see my set up, the D850 is fitted with a current 60 mm lens, this combination is mounted on a copy stand but a tripod would work, I raise the rear screen to a vertical position, switch on live view, this way I can sit at my desk and copy my transparencies, I use a wireless remote to fire the shutter, a standard light box provides the illumination. This image is a large crop from another image.