Zeiss Touit 50mm f/2.8M Lens for Fujifilm X Series Cameras Focal Length: 50mmComparable APS-C Focal Length: 75 mm Aperture: Maximum: f/2.8Minimum: f/22.0 Camera Mount Type: Fujifilm X mount Format Compatibility: APS-C Angle of View: 31deg. Lens not zoomable