Underwater Photography Glossary

An ultra wide-angle lens that takes in an a hemispherical image. Although fisheye lenses can create a distorted appearance near the corners from "barrel distortion" (straight lines appearing curved), they are very commonly used in underwater photography. Fisheye lenses allow an underwater photographer to get very close to your subject, limiting the amount of water between the camera and subject and maximizing the lighting possibilities, creating more pleasing images.