1 Viltrox AF 13mm f/1.4 XF Lens. This lens is autofocus with manual focus override. Focus Type: Autofocus. Focal Length: 13mm (35mm Equivalent Focal Length: 20mm). Compact Ultra-wide Angle Lens All EXIF data is recorded so you know you were using this lens, the aperture you were shooting at and all other relevant information as if you were using a native lens.