The Aspherical lenses that Fuji has designed are typically very sharp. What is in focus is generally bang! in focus. The out of focus areas are therefore a little more noticeable in my opinion. I have a Nikon 50 1.2 that I have used for years and always thought that it was reasonably sharp and that the DOF was shallow. But mounted on the XP-1 I have been surprised by how shallow the DOF is, it is even more shallow then I realized using it on Nikon DLSR's. It is also a VERY sharp lens, I had no idea until I mounted it on this camera.