HD WIDE ANGLE & TELEPHOTO LENS SET FOR CANON VIXIA HF G10

The package includes a wide and a tele lens. Attaching lens is simple, just screw them on. One of the lens attached nice and smoothly, the other one took some effort, as if thread was not quite right. After the lens is attached, the Canon camcorder has a setting whether an external lens is used, but I didn't see any impact from that setting, visually or in focal lenth numbers. I ended up returning this due to very visible loss of focus: about a quarter of the frame remains in focus, the rest is blurred, both for the wide and the tele attachments. The other issue is all four corners of the screen are blocked - showing edges of the attachments.