The Kiron 28-105mm f/3.2-4.5 MC Macro is a wide-angle to medium telephoto lens. This version of Kiron 28-105mm is designed for Nikon F mount cameras with AI-S capabilities (Auto Indexing Shutter that allows internal modifications to the lens for a faster and more precise shutter priority and programmed exposures by way of linear aperture movement). The lens is a push-pull type, thus the focal length is changed by pushing or pulling the focusing ring and the lens length is changing at the same time. The lens produces 1:4 scale photos.