Given that a cellphone case can easily run to $35, the iPhone Telephoto Lens is something of a bargain, combining as it does both a long, long lens, a case to hang it on, a mini-tripod to keep things steady, and a micro-fiber cloth to polish everything up.
It works like this: You slip the iPhone [...]
Source: http://www.wired.com/gadgetlab/2011/02/500mm-iphone-lens-for-grungy-close-ups/
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