Ultra wide angle lens the difference is only whether distortion is present or not. However, the shorter the focal length, the more difficult it is to implement rectilinear correction. In fisheye lenses, the visual angle is close to or more than 180 degrees in at least one direction. For example, a "diagonal fish eye" would have a viewing angle of at least 180 degrees within the diagonals of the frame. A "circular fisheye" would represent the image in the form of a circle. Rectilinear ultra-wide angle lenses are used in photography and cinematography sometimes to achieve three-dimensional perspective distortion instead of simply two-dimensional barrel
Bachelor of Mathematics mathematics. Relatively few institutions award Bachelor of Mathematics degrees, and the distinction between those that do and those that award B.Sc or B.A. degrees for mathematics is usually bureaucratic, rather than curriculum related. However, schools that offer Bachelor of Mathematics degrees argue for a separate degree, maintaining that the study of mathematics is vastly different from other fields. Australia Bangladesh Canada India Netherlands Russia United States Philippines Ghana Bachelor of Mathematics A Bachelor of Mathematics is an undergraduate academic degree awarded for successfully completing a program of study in mathematics or related disciplines, such as computer science or statistics. The