When you use DPReview links to buy products, the site may earn a commission.Sony announced its first firmware update of the new year, bringing changes to the a9 III (Ver. 3.00), a1 (Ver. 3.00) and a1 II (Ver. 2.00). The bulk of the update surrounds various shooting, movie and transfer functions of the three camera models. Perhaps more significant is the update to Sony's Camera Authenticity Solution, which aims to improve the implementation of the Coalition for Content Provenance and... more (link is external)