Cameras like the Lytro are great because they let you snap photos and then adjust the depth-of-field and focus after the photo's already been taken. It does this by collecting all of the focus data it needs at the time the photo is taken, which is great, but Lytro cameras are close to $400. If you already have an SLR you love, there's a way to get the same effect right now without buying anything extra, thanks to the folks at Chaos Collective. More »
