Sony A9 at Buydig, BHphoto, Adorama, Amazon, BestBuy. FocusCamera. Dpreview updated the Sony A9 review and score: Sony introduced a significant firmware update that largely revamped the autofocus system of the camera, adding a new ‘real-time tracking’ AF mode that works … Continue reading Dpreview: Sony a9 ‘real-time tracking’ update makes it the highest scoring camera in its class