Producing an expansive 180° angle of view, the Sigma SA-mount 15mm f/2.8 EX DG Diagonal Fisheye Lens from Sigma offers a super-wide perspective for creative applications. As a diagonal fisheye, this lens produces a notably distorted image that fills the entire frame, and its minimum focusing distance of 5.9" allows for working with unique perspectives with close-up subjects. Additionally, the bright f/2.8 maximum aperture benefits working in difficult and low-light conditions by allowing the use of faster shutter speeds.