have you ever taken a photo and only noticed it was out of focus afterwards? A new kind of camera from an ambitious startup could make such focusing mistakes a thing from the past. Able to take so-called “living photographs,” the Lytro camera captures images in such a way that viewers can change which part is in focus while viewing them.

The Lytro website gallery of “living” photos that shows off the light-field technology. With a click, you can re-focus the pictures on any part. The effect is impressive: a photo can take on entirely new meaning, depending on which part you focus on. Here is an example, a picture of two cats looks like a simple close-up when focused on the one in the foreground, but zeroing in on the background cat almost implies an ominous threat.