In RDS there are two scene settings: Background and Backdrop. Backdrop puts the image only in the production frame. Background wraps the image on a huge sphere. I was suggesting that you put the photo in both the backdrop and backgrounds -- that way you get an undistorted backdrop behind your model and you get "room ambience" to make reflections on the glass surface (if it has any reflectivity in its shader). As for the lighting on the glass -- yes it looks very good, except that it looks like there's a bright light to our right (off camera, to the right) reflecting on the front surface of the glass. This light isn't casting a shadow on the table. It's a bit odd.... I think that CCP was on the right track, too, suggesting a change of camera focal length (zoom setting) to more closely match that with which the background was photographed. If the background was shot with a 35mm camera and you know what kind of lens is on it (50mm, 34mm, 200mm), you can use the same settings on your rendering camera (RDS, at least, was designed to mimic 35mm photography lens settings). Otherwise, you can play with the focal length settings until you find something that works....