Features:EF-GFX camera lens adapter features auto focusing for digital adjusting, no need to manually control.Replacement for Canon EF-mount lens to FujiFilm GFX-mount med-format cameras, GFX100 GFX50S GFX50R.It is with inbuilt electronic contacts and the bayonets are made of metal with surface plating treatment, durable and sturdy.With EF and EF-S lens mounting index and camera mounting index on the sides for precise mounting.Metal contacts ensures high speed transmission, and the lens release lever makes detachment easier.Specifications:Brand: AndoerModel: EF-GFXColor: BlackMaterial: MetalNet Weight: 7.7 * 2.5cm / 3.03 * 0.98inDimension: 79g / 2.79ozPackage Size: 10.7 * 9.3 * 5.8cm / 4.21 * 3.66 * 2.28inPackage Weight: 120g / 0.26ozTested Compatible Lens:CANON EF 35/1.4 I/IICANON EF 28/1.8CANON EF 40/2.8CANON EF 50/1.2LCANON EF 85 F/1.2L IICANON EF 85 F/1.8CANON EF 85 F/1.4CANON EF 100mm f/2.8L IS USM Macro lensCANON EF 135mm f/2L USMCANON EF 200mm f/2L IS USMCANON EF 400mm f/4 DO IS II USMCANON EF 500mm f/4L IS II USMCANON TS-E 17 F/4LCANON TS-E 24 F/3.5L IICANON TS-E 90 F/2.8CANON TS-E 40 F/2.8CANON EF 70-200mm f/2.8L IS II USM(have dark corner, can be removed after tele-lens)CANON EF 70-200mm f/2.8L USM (have dark corner, can be removed after tele-lens)Sigma lens:SIGMA 35 f/1.4 ARTSIGMA 50 f/1.4 ART EX/GDSIGMA 85 f/1.4 ARTSIGMA 135 f/1.8 ARTSIGMA 150-600/5-6.3Zeiss lens:OTUS 55/F1.4OTUS 85/F1.4Note:The USB interface on the adapter does not support upgrade function.Can not be fully compatible with GFX100S camera, some functions might not support at current version of firmware.Packing List:1 * Camera Lens Adapter Ring1 * Cleaning Cloth