20120301_me_19.mp3?orgId=1&topicId=1143&d=260&p=3&story=147665130&t=progseg&e=147662506&seg=19&ft=nprml&f=147665130

Just when you thought you had the latest in camera technology, along comes something new and shiny and ... rectangular.

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It's called the Lytro, and it uses something called "light field technology." In short: You shoot now and focus later.

NPR's resident photo expert, Keith Jenkins, explains: In a nutshell, he says, this camera captures not only the color and the intensity of light — which is what normal cameras do — but also the direction of that light — from every possible angle.

Still confused? We are, too.

The best analogy came from Lytro CEO Ren Ng, who made a musical analogy. Let's say you like a band, and they're great live. But say you want to record them. You generally don't just stick a mic in the middle of the room and hope for the best. You record each band member — and sometimes even their instruments — separately in a studio. That way, when you're mixing it all together, you can control every element.

So think of the live band as a point-and-shoot camera on automatic and the studio recording as the Lytro.

Taking that analogy a step further, here's one of Keith's experimental photos — of the Cowboy Junkies playing a Tiny Desk Concert. Click around to see how it works.

We don't completely understand what goes on inside this little box — some of that is proprietary. We do know there's a lot of math. And a lot of sensors. In short: The idea is to gather as much information as possible to give you more control after the photo is taken.

So say you've got a pretty person in front of some majestic mountains. Instead of focusing on one before you click, you can take the photo — and choose your focal point later.

The New York Times compares the Lytro's size to a stick of butter, which is about right. For $399, the 8-gigabyte model can capture about 350 images; the "red hot" 16-gigabyte model can capture 750 and costs $499.

For some photographers, the technology could be a breakthrough. The pressure is off – you don't need to worry about focusing perfectly in the moment. It's also a chance to experiment with artistry in a different way.

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"The interesting thing about this camera is what this new technology opens up," Jenkins says. "The possibilities when you're gathering so much visual information from a scene and in essence, gathering it in almost a three-dimensional way — the potential of what this does for photography is pretty huge."

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