A while ago, we published our Sony a7v review. Along with several other journalists, we all found problems with it. These problems specifically had to do with using third-party lenses. Those lenses are from Chinese brands that do not pay Sony to have a license to work with the brand. It’s one of the reasons why Nikon is suing Viltrox right now. Sony hasn’t done that. But here’s the problem, the autofocus issues that we found affect even Tamron lenses — and Sony owns part of Tamron.
