Hello Buddy. I too am surprised that they are so clear with such a long shutter speed. Well the Jelly is a little soft, but the Lionfish surprises me. According to the EXIF, the Lionfish was 1/15” at 2.8 and the Jelly fish was 1/8” at 2.8. So what was the zoo’s position on tripods and flashes? When I do this at home, I use 1 or two flashes and the tripod is only to hold the flash.