I had this lens since it came out. To be honest, I didn't really need it, just thought it was intriguing. Haven't used it much either, but the few times I did, I was very happy with it. Once was when I had to take pictures of an old world war 2 airplane cockpit, specifically its instrumentation. This lens worked great, it was nice not to have to manoeuver inside the tiny cockpit with a huge lens, and the resulting pictures were tack sharp. Just what I needed. Basically I see it as a back up lens. Wherever I go, vacation, shooting something important, this lens can basically be in a side pocket, and if the primary lens failed, this would be a nice backup.