Sony's innovative QX10 and QX100 "lens-style cameras" are real, people, and they just got introduced at the company's IFA 2013 event. The concept lies on the premise that you don't want a bulky cameraphone with you at all times, but only at those periods you know you'll actually need it...
Source: http://www.phonearena.com/news/Sony-QX10-and-QX100-lens-modules-official-turn-your-smartphone-into-top-shelf-camera_id47048
Source: http://www.phonearena.com/news/Sony-QX10-and-QX100-lens-modules-official-turn-your-smartphone-into-top-shelf-camera_id47048