Abstract: A lens assembly comprising nine lenses. Each lens includes u greater than or equal to about 12.8°, LEP equal to or from about 100 mm to about 400 mm, &agr; Rba greater than or equal to about 1°, and &agr; Rbi less than or equal to about −14°. The outward ray angle tilt and the inward ray angle tilt are positive if the outward ray and the inward ray intersect the optical axis at a location which, when seen from the object, is in an opposite direction to projection. The outward ray angle tilt and the inward ray angle tilt are negative if the outward ray and the inward ray intersect the optical axis at a location which, when seen from the object, is in the direction of projection.

Abstract: A lens assembly comprising seven lenses. Each lens includes u greater than or equal to about 12.8°, LEP equal to or from about 100 mm to about 400 mm, &sgr;Rba greater than or equal to about 1°, and &sgr;Rbi less than or equal to about −14°. The outward ray angle slopes and the inward ray angle slopes are positive if the outward ray and the inward ray intersect the optical axis at a location which, when seen from the object, is in an opposite direction to projection. The outward ray angle slopes and the inward ray angle slopes are negative if the outward ray and the inward ray intersect the optical axis at a location which, when seen from the object, is in an opposite direction to projection.

Abstract: An anamorphic attachment (3) for purposes of filming and reproduction to be used in conjunction with a basic lens (2). At the attachment (3) there is a first subsystem (8) serving the main purpose of enlargement in a first direction and a second subsystem (7) serving the main purpose of enlargement in a direction vertical to the first direction. The first subsystem (8) contains a positive front lens group (12) and a negative rear lens group (13). The second subsystem (7) a negative front lens group (9) and a positive rear lens group (10). The second subsystem (7) is located between the first subsystem (8) and the basic lens (2), providing that the adjacent negative lens groups (13, 9) of the two subsystems (8, 7) may also be exchanged. If the basic lens (2) is set to a focal length Fg and the attachment to the object distance "infinity" and the total focal length is V1.multidot.Fg in the first direction and the total focal length V2.multidot.