Key Features: • Enables use of A-mount lenses on E-mount cameras • Full phase-detection AF support with modern sensors (a7R IV, a9 II, FX3, a7 IV, etc.) • Compatible with SSM/SAM motorized lenses • Compact and lightweight design • Eye AF and Real-Time Tracking supported (camera-dependent) • Mechanical aperture control for older lenses • No optical elements — no image degradation