Although people may speak about zooming in with smartphone cameras, what they're doing isn't actual "zooming" in the telephoto-lens sense of the word. That's because almost all phone cameras just have a digital zoom, meaning that in order to get in closer on the subject, the phone just enlarges the pixels from the middle of the frame. The result is a grainy, crappy photo. While it is possible
to squeeze optical zoom lenses into phones, Tel Aviv University spinoff company Corephotonics has developed a sleeker solution, that utilizes the combined output of two compact lenses.