Light Shaping Control Like typical ellipsoidal lights, the Spotlight Mount also offers simple user-interchangeability between Aputure's 36 Degree lens, whether you need a wider illumination circle or pinpoint accuracy. Combined with the internal shutters, filmmakers will be able to gain more control of the shape of their light. Precision Optics The three lenses for the Spotlight Mount were designed with professionals in mind. In addition to allowing the 120d II to produce 10 times its original output, the high-resolution lenses produce an even beam of light, with minimal light falloff on the edges, while maintaining a shift in color temperature of less than 200 degrees Kelvin