• 【High Performance Phase Detection AF】It is like using a native lens on a DSLR camera while using this fringe. Also supports face/eye detection autofocus. Fast and accurate PDAF • 【Electronic Aperture Ring】Like the Native GF lens, each step = 1/3 stop aperture: set the F number with the aperture ring or command dial. Keep the habit of using original GF lenses • [Lens IS and IBIS] User selectable, lens IS or IBIS. But not at the same time; controlled by camera menu (continuous, shooting only, off) • (LaCA) Correction: Automatically corrects color fringes with high contrast edges. Built-in lens correction profile database; current lens profile is automatically transferred to camera; JPEG image is LaCA corrected directly from the camera • Vignetting & Distortion Correction & EXIF Recording: The common vignetting and distortion issues are greatly improved when adapting a 35mm lens to a medium format camera. Start with firmware 1.30. It can record all lens information including lens models, focal length range, aperture range, current focal length and current aperture