A pair of optical prisms arranged in a complementary relationship provides for anamorphic magnification and cooperates with a refractive or diffractive element having at least one axis of effective cylindrical curvature, wherein each at least one axis of effective cylindrical curvature and the apexes of the pair of optical prisms are all substantially parallel to one another. The refractive or diffractive element generates an aberration as a result of rotation thereof about an axis parallel to the at least one axis of effective cylindrical curvature that at least partially compensates a corresponding aberration generated by the pair of optical prisms.