Fringer Smart Adapters have been around for a while and are usually first to market with a lot of great features, but there is a lot of competition today. While the Sigma 18-35mm f/1.8 DC HSM Art’s performance looks very good in the above video, Techart and Steelsring aren’t far behind Fringer. I have only personally used Techart AF adapters and they worked quite well on my Sony cameras, but I have heard good things about Fringer. You can read more about Fringer’s new smart AF adapter at fringerdev.
