A research team has developed a small optical lens, only a few millimeters in size, whose refractive behavior changes in the presence of gas. This 'intelligent' behavior of the micro-lens is enabled ...

If you're fed up with the high cost of camera lenses, help may be at hand. Ari Jaaksi, a photographer in Finland, built his own lens for a mere 8 euros ($8.72/£6.71). Naturally, such a lens isn't ...