The EF-GFX Smart Expander offers electronic integration, including support for phase-detection autofocus (PDAF), in-body image stabilization (IBIS), optical image stabilization on stabilized lenses and smooth iris on lenses that support it. The adapter features a physical toggle that can switch between auto aperture (for use with Program and shutter priority shooting modes) and manual aperture (for use with aperture priority or manual exposure). If an entirely manual lens is attached, the button will bring up the manual lens selection option on the GFX camera system being used so you can manually enter the focal length to account for IBIS operation and EXIF data.