Of course, the optical quality is not outstanding. However, the use of fun and extends the capabilities of the built-in camera in my age-old phone (Samsung SGH-E590, 3MP cam.). In fact, the set objectives has four functions. The Fisheye has about a Viewpoint of 120 ° instead of 180 °. Wide and Tele seem the data correspond to the macro lens, which is a part of the wide-angle, works very well, I'm down to about two to three cm approaches objects. The adhesive ring on the lenses holds are attached magnetically to now firmly on the phone. For each lens is a plastic cover for the front each (slightly decrease fiddly) and a magnetic cover for the back available (with Ribbon for hanging :-)), and an adhesive ring and another ring whose purpose I do not know. In addition to the Fisheye (as always) also has the Tele strong vignetting (Randabdunkelung), but can also be located at the interaction with the built-in lens. On the whole, a successful thing, especially for that price: 6,99 incl. Shipping.