The Voigtlander Color Skopar SL II was designed especially for Canon cameras. This quality lens is a manual focus that uses 52 mm filters. This 20 mm f/3.5 lens features 9 aperture blades for a bokeh that is more pleasing, resulting in photos with great clarity and detail. This small and compact Voigtlander lens for Canon cameras is a wide-angle lens with a 20 mm focal length, making it an ideal all-purpose type of lens. The nearest focus on this Voigtlander Color Skopar SL II lens is 0.2 meters, which is an unusually close range for a 20 mm lens. This Voigtlander lens for Canon cameras uses an electronic aperture which is operated by the camera, rather than with the typical aperture ring. In addition, this 20 mm f/3.5 lens is ultra-lightweight, allowing the user to take photos by hand, without the need of a tripod. The Voigtlander Color Skopar SL II lens can also be used for taking astronomy photos because of its infinity focus stop feature.