Expanding your choice of lenses when working with the Fujifilm GFX mirrorless camera, this Laowa Magic Format Converter MFC from Venus Optics enables you to use Canon EF-mount full-frame lenses with the Fujifilm G-mount medium format camera. Differing from a conventional, simple adapter, this sophisticated manual lens adapter employs an optical system to expand the image circle and magnification by 1.4x in order for the full-frame lens to cover the larger 44 x 33mm sensor of the GFX system. This optical system also helps to effectively prevent vignetting and maintains the optical clarity and sharpness of the original lens.