Shot a real cave for the school, had to shoot Thru the glass, marked up, and ambient was 2.8, 640 12,800, could have gotten away w 10k but would have been dark. I wasn't expecting much and didn't really get any great shots, but still amazed at what this machine can deliver. A little NR straighten, crop, curves in post. if I had to shoot this rink on a regular basis, i think you would have to strobe it.
