There has been a lot of buzz about this revolutionary camera during it's development the last few years. Well, now it's here for you to purchase. Lytro, a Silicon Valley company has just released their unique camera which takes what the company calls "living photos".
Unlike a conventional camera that captures a single plane of light, the Lytro camera captures the entire light field, which is all the light traveling in every direction in every point in space.
Since you'll capture the color, intensity, and direction of all the light, you can focus after the fact. Focus and re-focus, anywhere in the picture at anytime, after the fact.
And focusing after the fact, means no auto-focus motor which means no shutter delay.
Price for the 1.61 in x 1.61 in x 4.41 in, 7.55 oz camera goes from $399. to $499. depending on hard drive capacity.
More info here :
https://www.lytro.com