The Voigtlander 21 mm f/4 is a reliable wide-angle camera lens with 91 degree picture angle that provides you with a wide and clear view of the subject. The 8 elements in 6 groups lens construction of this Voigtlander wide-angle lens provides a sharp picture with excellent contrast. The 10 diaphragm blades of this Voigtlander camera lens enhance the out-of-focus effects and offer a professional quality image. The Voigtlander 21 mm f/4 camera lens has a 0.5 meter minimum focus distance that delivers a detailed and close picture of your subject. Get a clear and bright image in any low-lighting situation with the f/4 maximum aperture of this Voigtlander wide-angle lens. The f/22 minimum aperture of this Voigtlander camera lens provides exceptional outdoor images.