The Samyang 14 mm Ultra Wide-Angle f/2.8 IF ED UMC Lens for Nikon with Focus Confirm Chip gives you approximately a 115-degree view with dramatic results when used with a full frame digital camera or 35 mm film camera. It includes a special chip that allows the lens to work with the camera's focus confirm, auto exposure, auto metering and auto white balance functions.With the hybrid aspherical lenses, you will produce sharply defined images with a minimum of distortion and chromatic aberrations. These manual focus 14 mm lens focuses as close as 0.9' (0.274 m) from the lens and has a built-in petal-type lens hood. With some cameras, Shutter Lock must be disengaged on the camera's menu.