I am very surprised by the quality of the images from this lens. Here are just a couple of examples at 15mm as close as I can focus. Even at f3.5 the out of focus colors are creamy and colorful. I've taken a few comparison shots using my 16mm and this lens at 15mm. Aside from the obvious big advantage of having f1.4 on the 16mm, the image quality is only slightly sharper on the 16 vs the this lens at 15mm when both are set at f3.5. It is a cheap plastic build like the other XC lenses, but certainly not a slouch. Nice that they designed in a very close focus capability.