This is something new for me, using a fisheye lens that it. The lens gives an angle of view of a 15mm lens on FF but that doesn't mean a thing for me when using a fisheye lens. It's so different that I didn't really know what I was doing. Most of the images I took with this lens on this outing were binned immediately because they just didn't work. The first thing I learned when looking at the images on my screen was forget everything what's in the middle of the image. Whatever is there, just disappears into the far distance. What's important is what's at the edges of the image. This is the most single important point you have to watch when using a fisheye lens.