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
How Many Licks? VH1 wrote that the single and other tracks from "The Notorious K.I.M." have a "glossier and far more commercial" sound than the rapper's previous releases. The lyrics of "How Many Licks?" are part of a movement in 1990s hip hop music to express sexuality positively. Sexuality studies professor Thomas A. Foster wrote that Lil' Kim reverses a trend in hip hop music which objectifies women for the male gaze and celebrates male sexuality. Gender studies scholar Aine McGlynn described "How Many Licks?" as one of the most sexually-explicit songs to receive airplay. The lyrics describe a woman's interest in oral