Fujifilm Fujinon Tele Converter XF 1.4x TC WR Type: Converters & Adapters Focal Length: 1.4x that of original lens Camera Mount: Fujifilm X mount Aperture: 1 additional stop Compatibility: Micro Four Thirds System Lens Construction: 7 elements in 3 groups Dimensions: External: Approx. 2.28 x 0.59 Weight: Approx. 0.29 lb.