What is the best budget prime lens for a Sony a6400 right now? I'm trying to find something sharp for street photography and maybe some shots of my dog when we are out in downtown Chicago but I'm on a tight budget under $300. I've been looking at the Sigma 30mm f1.4 since everyone says it is the gold standard but then I saw some reviews for the Viltrox 33mm f1.4 and it is way cheaper. Some people say the Viltrox has weird autofocus hunting though and I don't want to miss shots of my dog running around... is the extra money for the Sigma actually worth it for a hobbyist or is there something else I missed?