Incredible lens. The first test I did was for sharpness. I saw a cricket on my wall and from 6ft away at 200mm with a shutter speed of f5.6 125 and the built in flash of my Nikon D 3500. It was obviously very small in the picture. When I zoomed in I couldn't believe how sharp and detailed it was. I do macro photography and have an expensive macro lens and I would give this shot an 8 out of 10 for sharpness if it were a macro lens. I was shocked, if I can upload a picture I will. Second, I wanted expedited shipping, so I paid an extra $30 because it came from Seoul, Korea. I received it in two days. Wow. Buy this lens, you won't regret it.