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
The Three Degrees Live The Three Degrees Live The Three Degrees Live is a 1976 live album by Philadelphia-based female vocal trio The Three Degrees who scored major international success with 'When Will I See You Again?'. The album charted at #34 in the US R&B Album chart and at #199 in the Billboard Top 200. During a UK tour in 1975, The Three Degrees performed at Bailey's in Leicester, England, and the evening's concert was recorded and subsequently released by Philadelphia International Records as "The Three Degrees Live". The setlist for the concert was typical of what the group was doing at that