This zoom lens was exclusively designed to suit the characteristics of digital SLR cameras. The image circle was designed to match the size of the image sensors of digital SLR cameras. This has produced a compact lens with a maximum diameter of 60mm, overall length of 67.5mm and weight of only 245g. It has a variable angle of view of 76.5 - 31.7 . The use of aspherical lenses provides correction for various aberrations throughout the entire zoo