Depth of field is a very important key in photography! Now Lytro intreduced us with something (Light field camera) that was’nt possible before: Changing our focus area and the DOF (depth of field).

I think it’s a nice concept and maybe will take photography that we know a few more steps in the future. Overall it’s a nice toy and great idea.
Here is a short video that will explain better about this camera.

For more info about Lytro check their website: 

For more info about Depth Of Field Check Wikipedia.