There's already an array of additional lenses to augment our mobile phones, and quite a few of them have their origins in Kickstarter, too. There are telephoto and fisheye lenses that screw on or clip on as well as macro lenses on elastic bands, but now Lensbaby, known for its creative optics for dSLRs, is joining the fray with a campaign to fund a selective focus lens for iPhones 4s, 5, 5s, and 5c. It's called the Sweet Spot, and it will render images with a sweet spot of focus surrounded by blur. By pledging $50 to the campaign, you can pick up a Sweet Spot and start composing dreamy, selectively-focused shots. The Lensbaby attaches to an iPhone using both adhesive and magnets. One stainless steel ring sticks to your phone, around its lens, and the Lensbaby is mounted to that using magnets. The Lensbaby lens has magnets on both ends, meaning that it can be combined with other magnetic iPhone-compatible lenses, such as fisheyes and telephotos, for even greater control over your photos.
As well as the lens, there's an accompanying app. It's been developed to provide an optimal shooting experience with a Lensbaby lens. Primarily, it ensures that the image you see on your screen is the right way up, because the optical design of the lens means that it renders upside-down with the iPhone's native camera.
The catch is, of course, that these are only some-iPhone-models-friendly. If you're an Android user, or an iPhone 4 user, you're out of luck.
The question quite a few people might be asking is why has Lensbaby, a well-established company with a significant turn-over, opted to seek Kickstarter funding for a mobile-oriented version of its product? The answer's in the question: this is a departure from Lensbaby's dSLR stomping ground and it wants to be sure that this is a product consumers want. An iPhone-only offering with a modest $20,000 goal suggests that Lensbaby is using Kickstarter to dip its mobile toes in the water. With 199 backers and over half of its goal achieved within roughly 24 hours, I'd say that people are interested in a selective focus iPhone lens. Android users might even be interested in a version for their phones, too.
If you'd like a Lensbaby Sweet Spot for your iPhone, you can pledge over on Kickstarter.