When making this image I took more document pictures about the lighting. I use fisheye lens (full frame fisheye in APS-C camera) for the setup photo but even that is not enough and I use panorama (handheld, 5 shots) made in Lightroom. That boundary warp works really well. With the usual setup image I took shots with different lights on and off. For the editing I took one shot that shows the floor under the grey background. I didn’t want to use the real floor but I used that to get tiles perspective right on the final image. All the images can be found from the video.