The 14mm f/2.8 IF ED UMC Lens for Canon EF with AE Chip from Rokinon gives you approximately a 115° view with dramatic results when used with a full frame digital camera or 35mm 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 hybrid aspherical lenses, you will produce sharply defined images with a minimum of distortion and chromatic aberrations. This manual focus 14mm lens focuses as close as 0.9' / 28cm 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.