Leica Summicron-M 90 mm F/2.0 APO lens combines aspherical lens surface and apochromatic colour correction technology for the first time for this type of lens. The Summicron-M 90 mm lens is made of 5 elements in 5 groups. 2 elements are made of glass with high refraction and the rest of the 3 elements are anomalous particle dispersion. These features give the Summicron-M 90 mm lens such high quality resolution that even at full aperture the pictures remain sharply focused, detailed and bright. The rest of the features of the Leica Summicron-M 90 mm F/2.0 APO lens include a stop range of F/2.2, a minimum focusing distance of 1 m and a magnification of 1:9. The angle of view of Leica M90 mm is 27 degrees. The lens has a length of 78.7 mm and a diameter of 63.5 mm. The weight of Leica M90 mm is 500 g. The fast aperture of Leica Summicron-M 90 mm F/2.0 APO makes photography possible in poor lighting conditions and eliminates picture distortion caused by camera shake.