Since optical zoom entered the mobile market, conversations about zoom technology in smartphones have become more common. Smartphones can now implement all three types of camera zoom: optical, digital ...

Changing the focal length of a camera by adjusting the physical zoom lens. All zoom lenses in film cameras and digital single lens reflex (DSLR) cameras are optical zoom. Digital point-and-shoot ...

Some camera features are worth paying for, while others seem to exist exclusively to print big numbers on the box to sway naive buyers. When it comes to zoom — whether on a smartphone or a camera — ...