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
Less Than Jake band programs. On June 20, 2011, the band released an EP, entitled "Greetings from Less Than Jake", which was made available on the group's online store and was sold on Warped Tour 2011 as well. On February 16, 2012 Less Than Jake released a follow-up EP, entitled "Seasons Greetings from Less Than Jake". The band announced both EP's would be re-released, with 2 unreleased songs, as part of a new album called "Greetings and Salutations from Less Than Jake", released in October 2012 through Fat Wreck Chords, who had released "Borders and Boundaries". On April 17, 2013, Less Than Jake