Computational photography and in-camera focus stacking can help photographers keep more of the image in focus, but what if a camera could focus on everything all at once using only optics? Researchers at Carnegie Mellon University used four different lenses and 3D display tech to create a Franken-lens that can keep every pixel in a photo in focus.
Traditional optics can only focus on one distance range at a time, adjusting a single focus plane to bring objects in focus. Techniques like focus stacking can help, but are based on editing and computational photography – not optics.
