The camera measures only 79 cubic centimetres.
Casio's palm-sized Exilim camera is much smaller than others as, for the first time, it uses a ceramic lens.
According to Casio, ceramic lenses have a higher refractive index than glass lenses.
The Exilim cameras will be priced in the $455-$500 range and will be available from September 25. -- Agencies
The world's smallest digital cameras with zoom lens 'Exilim EX-S100' (L) and the new 5 mega-pixel digital camera 'Exilim EX-Z55.' Photo: Yoshikazu Tsuno/AFP/Getty Images