Autofocus Test: Sigma Art 50mm f/1.4 Sony E Mount I exchanged the Sigma for the Sony 16-35mm f/2.8. The Sigma autofocus was just too slow and unreliable. “City Lights” by AudiobingerSourceLicense Leave a Reply Cancel reply Enter your comment here... Fill in your details below or click an icon to log in: Email (required) (Address never made public) Name (required) Website You are commenting using your WordPress.com account. ( Log Out / Change ) You are commenting using your Twitter account. ( Log Out / Change ) You are commenting using your Facebook account. ( Log Out / Change ) Cancel Connecting to %s Notify me of new comments via email. Notify me of new posts via email. Δ This site uses Akismet to reduce spam. Learn how your comment data is processed.