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
98 Degrees and Rising 98 Degrees and Rising 98 Degrees and Rising is the second album released by American boy band 98 Degrees. It was recorded at Blue Wave Studios in Vancouver, British Columbia, Canada and released by Motown on October 20, 1998. The album features the singles "Because of You" and "The Hardest Thing", which peaked at No. 3 and No. 5 on the "Billboard" Hot 100 respectively. The album also features two covers, Mark Wills' "I Do (Cherish You)" and "She's Out of My Life", made famous by Michael Jackson. It also features a duet with label mate Stevie Wonder, "True to