It is a type of wide-angle lens used in photography to capture extremely wide and hemispherical images. Its focus length varies between 8-10 mm for circular lenses and 15-16 mm for full frame lens. Originally developed for use in meteorology and astronomy, it is used in planetariums and dome theatres to show pictures on a broad canvas.
Check Also
Kalki 2898 AD: 2024 Indian epic science-fiction dystopian film
Kalki 2898 AD : Movie Name Directed by: Nag Ashwin Starring: Prabhas, Amitabh Bachchan, Kamal …