Yongnuo 50mm f/1.8S DA DSM II: B&H Photo / Amazon Yongnuo has a new YN 50mm f/1.8 DA DSM II APS-C lens for Sony E-mount with improved autofocus from the previous version. The new lens will soon be listed on the Yongnuo Amazon store. Yongnuo is planning to announce five new AF APS-C lenses in different mounts: […]