Small update on the Sigma 12mm f/1.4 patent: It’s an autofocus lens August 7, 2017 Rumors 0 Comments Small update on the Sigma patent info we posted weeks ago. This is an AUTOFOCUS lens. The Japanese site hi-lows-note speculates that this might be a new ART lens for the Micro Four Thirds system. Like my work and want to support me? Do it for free :) Whenever you go for a shopping just click on those links and buy whatever you want and I will get a small commission for it without you having to pay one single penny extra: Amazon, B&H, Adorama, Olympus US store, FocusCamera, eBay.