Irix 15mm f/2.4 Blackstone. The Irix 15mm Blackstone is a manual focus, super-wide-angle lens. Less boring images coming soon (hopefully). I need more time to actually get out and shoot somewhere, but it's winter now and my options are more limited. I posted an unboxing video on YouTube. UPDATE: I decided not to keep this lens (returned for refund), but it was NOT due to the quality or any problems. I simply found the 15mm focal length was too wide for most of my shooting and it would have been a bad idea to keep it and not use it very often. I was very happy with the build quality and images made by this lens.