Feature: 1. Support AF auto‑focusing, fast and stable auto‑focusing function to make your shooting more clear and natural. 2. Support EXIF information transmission, support AF auto‑focusing, fast and clear focus function, in the moving scene shooting can quickly focus. 3. Gold plated contact, removable 1/4in. tripod base, gold plated electronic contact, enhanced data transmission, tripod base can be connected to the tripod and light frame. 4. 0.71 times reducing focus and increasing light, effectively reducing the focal length, increasing aperture, increasing the amount of light;Built‑in USB firmware upgrade port, expand compatible upgrade. 5. The electronic aperture IS adjustable, and the aperture scale IS accurate and easy to adjust, making your shooting more professional. It supports the IS anti‑shake function, and the anti‑shake function allows you to shoot the picture as clear as usual under various scene such as movement and capture. Specification: Item Type: Adapter Ring Material: Aluminum Alloy Color: Black Weight: Approx.246g/8.7oz Model: EF-FX Booster Bayonet: EF/EF-S Bayonet, FX Bayonet Compatible Lens: EF/EF-S Mount Lens Compatible Camera: FX Mount Camera Body Front Mount: EF/EF-S Mount Lens Back Installation: FX Mount Camera Body Peripheral Diameter of the Camera End: 61mm/2.4in Peripheral Diameter of the Lens End: 67mm/2.6in Applicable Model: for Fuji X-T1 X-T2 X-T3 X-T4 X-T10 X-T20 X-A1 X-A2 X-A3 X-A5 X-A10 X-A20 X-E1 X-E2 X-E13 X-E2S X-H1 X-PRO1 X-PRO2 X-PRO3. Package List: 1 x Adapter Ring2 x Adapter Ring Protection Cover (Installed)1 x Manual