A fixed focal length lens that with around 45mm with an aperture of f1.4 and offers an angle of view similar to that of the human eye. The shallow depth of field with the aperture fully open offers photographers ideal conditions for fascinating portraits and still lifes. A smaller aperture with a greater depth of field can be selected for landscape photos or snapshots. Standard lenses offer a wide range of photographic applications and have therefore been part of the basic equipment of photographers for decades. SIGMA lenses with the designation “DN” offer optimal performance in connection with LEICA CL/TL cameras.