PHOTO | Fisheye, Macro, and Wide Angle Camera iPhone Lenses

The wide-angle, macro, and fisheye lenses from Photojojo come with a little self-adhesive magnetic ring that stick to your smart phone. The ring's removable. The wide-angle gives a 0.67x angle of view, and will let you focus as close as 10mm. The fisheye will give a 180º view, and a 0.28x magnification. At $40 for the pair of lenses this probably worth it... (via)