Crayfish: Shooting crayfish with a fisheye lense is pretty tricky. One has to put the dome port very close to the crayfish and shoot blindly. In most of the shots the crayfish wasn't sharp though. Dive #644: Baumg√§rtli, Lake Zug. Nikon D200, 1/160 s, F/5.0, 10.5 mm, ISO 100, Sunday, April 15, 2018 11:07:29