Nice performance. About the lens, Wanted to know if there are any updates on af performance after firmware update 1.0.4 in Nov 23 as people say that it was not reliable for fast moving subjects like birds, running pets, children, etc in the very first firmware? I am in the market for buying one. I currently have sigma 18-50 f2.8 for my a6700, looking to have a prime now-- confused between sigma 56 f1.4 and the this viltrox 75. Performance wise 56 seems to be reliable. Wether sealing, image quality wise viltrox seems better. Also this will add a bigger focal length for my use.