The Tokina AT-X 35mm f/2.8 PRO DX Macro Lens gives the same angle of view as a 52mm lens when used on digital SLR cameras. The close focusing distance of the M35 is an amazingly close 5.5 in. (14cm) yielding a macro ratio of 1:1 or life-sized reproduction with excellent sharpness. Its compact size makes it easy to carry almost everywhere and the wide f/2.8 aperture allows for easier viewing in low light situations. The front element of the AT-X M35 PRO DX has a newly formulated WP or "Water Proof" optical coating on the glass. This coating makes marks such as spots left by water or finger-prints much easier to clean than standard multi-coating. Tokina's exclusive One-touch Focus Clutch Mechanism allows the photographer to switch between AF and MF simply by snapping the focus ring forward for AF and back toward the camera to focus manually. There is no need to change the AF-MF switch on Nikon cameras. The lens is designed for Digital cameras with APS-C sized CMOS and CCD sensors, not designed for cameras with Full Frame sensors.
