Photography is an expensive hobby. Advanced equipment always can create amazing photos. I love fish eye lens although it is too expensive for its limited usability. The fish eye lens is the best way to capture a full spherical panorama since it is a wide-angle lens that takes in extremely wide.
An all-sky starfield is only possible with fish eye lens.
(Amazing. It is exactly a world i dreamed during my childhood. )
A fish eye lens can add humor to a portrait.

(April Fool's Day is coming. Maybe i should consider purchasing a fish eye lens to celebrate the funny day)