Sony has recently filed a patent for new lenses, including super telephoto prime options such as 800mm f/5.6 and 400mm f/4 GM ...

This term refers to actually zooming in on your subject by changing the lens' focal length, which magnifies the image by ...

All zoom lenses in film cameras and digital single lens reflex (DSLR) cameras are optical zoom. Digital point-and-shoot cameras as well as consumer and prosumer video camcorders have optical zoom ...

Though still only in the prototype stage, this flat lens could one day be used on space telescopes, and perhaps even on amateur telescopes.