I had no idea there was a wide angle lens that wasn't a fisheye. The difference between it and my Nikon 16-35 @ 16mm is mind-blowing. I've used it in a real estate interior and an aviation museum, it worked well, I think it's pretty sharp, but I haven't had much time with it. I like Nikon's trick, it shows when it's in focus and the "lock" to infinity works well. I think the build is pretty good, I really want to use it more. I would buy again, no problem. I can't use front filters so I boughtβ¦