Photojojo lenses for your mobile phone

The camera on the iPhone 4 is really pretty good. The only thing it really lacks in order to replace my Casio Exilim is an optical zoom function and, if I'm honest, I wouldn't want to add a zoom lens if it meant doubling the depth or increasing the weight of my phone.

One alternative, which I hadn't really considered before today, is an external lens that attaches to the body of the phone. These things have been around for some time in the form of special cases, or impractical clip-ons, but Photojojo (http://photojojo.com/store/awesomeness/cell-phone-lenses/) have a new range that seems to offer a decent tradeoff between cost, size and quality. At $40 a set they're not all that expensive and the sample pictures look fairly good.

The only downside I can see at the moment is that you have to attach a magnetic ring of some sort to the back of your phone so that the lenses have something to which they can adhere but that probably isn't too serious, as long as the ring is low-profile.

Anyway, Photojojo have both fisheye and combo wide-angle/macro lenses in the range and they look pretty interesting; I hope to check them out later in the year.