Designed to attach seamlessly to your FUJIFILM X100-series digital camera, this Telephoto Conversion Lens from Viltrox narrows the field of view by 1.4x to offer a tighter, 50mm equivalent focal length. It maintains the aperture and has a multilayered coating to protect against water and smudges. The four-group, five-element optical design has two HRI elements to maintain your camera's expected image quality.