Sony A9 Eye AF is Mind Blowing and the Image Quality is Breath Taking: Sony Alpha Full Frame E-mount Talk Forum: Digital Photography Review
Sony Eye AF explained | Enthusiast Photography Blog
Amazon.com : Sony Alpha a6400 Mirrorless Camera: Compact APS-C Interchangeable Lens Digital Camera with Real-Time Eye Auto Focus, 4K Video, Flip Screen & 16-50mm Lens - E Mount Compatible Cameras - ILCE-6400L/B :
How To Setup Sony A7 III Eye Auto Focus | Eye Auto Focus Sony A73 - YouTube
Sony's Eye AF For Animals | Real-time Eye AF For Animals | Sony South Africa
Sony Eye AF for Animals - a6400, A7 III, A7R III - Mirrorless Comparison