With news that we bought ten times more digital cameras than film cameras last year, it's no surprise that the number of digital photographs we are estimated to take is on the rise as well.

New research from Lyra Research in America suggests that the number of digital images captured world-wide has grown from under 40 billion in 2002 to nearly 200 billion in 2005.

The company believes this number will rocket to close to half a trillion digital images captured by 2009.

The research company believes however, that over 60% of the 2009 total will actually come from camera phones rather than traditional digital cameras.

“As camera phone penetration rises and their image quality improves, hundreds of millions of consumers around the world will become accustomed to grabbing spur-of-the-moment photos with their phones”, explained Steve Hoffenberg, Lyra's director of consumer imaging research.