A new patent has been filed by Canon, the patent is completely based on “compound eye” lens, like an optical lens attached with several lenses but focal length is different and that makes the device more capable to snapping shots like All focused on the subjects. And however the patent is refers to videocamera so it’s really amazing to see a Lytro styled video camera.
Simple theory of light field camera:
The other name of light field camera is plenoptic camera which serves as a capturer of required information about the intensity of light in scene, and also captures information about the direction that the light rays are traveling in space. One type of light field camera uses an array of micro-lenses placed in front of an otherwise conventional image sensor; to sense intensity, color, and directional information.