Fish-eye lenses are a popular type of photography lens that is known for its ability to distort images to create a unique and artistic effect. Some of the synonyms that can be used to describe a fish-eye lens include ultra-wide-angle lens, hemispherical lens, and panoramic lens. Fish-eye lenses are often used by photographers to capture images that require a wide field of view or to create a sense of depth in a shot. Many photographers also enjoy using fish-eye lenses to experiment with different visual effects and to push the boundaries of traditional photography. With their unique properties and distinctive characteristics, fish-eye lenses are a versatile tool that can add a touch of creativity to any photographer's arsenal.