Affordable. That's all. The connection isn't smooth, it feels like I'm grinding away metal every time I put this lens on. The picture quality was below average. It wasn't bad, but if you're looking for a sharp image, this lens just can't do it. As for the focus ring and build quality, they were actually fine. However, there is nothing to write home about. So I returned it to buy a vintage lens.
Canon EF 40mm f/2.8 STM Lens - Fixed Black (6310B002) for US Cameras
76 Review
Nikon 35mm f/1.8G Auto Focus Lens for Nikon DSLR Cameras - Black (Model 2183)
125 Review
Nikon 50mm f/1.8D Lens: Perfect for Nikon DSLR Cameras!
97 Review
New Nikon 18-105mm Vibration Reduction π· Zoom Lens with Auto Focus for Nikon DSLRs
104 Review