PRNewswire: Panasonic leverages its high speed sensor to introduce a Post Focus feature that captures multiple photos with multiple in focus points through a single release of the shutter. Post Focus uses 49-area DFD (Depth From Defocus) autofocus to capture 4K images at 30 fps. The operation of Post Focus function is quite simple and easy – set the camera to Post Focus mode, and press the shutter button. The camera automatically "racks" the focus while capturing photos with varied in focus points. During the playback, one uses the touch screen to select the in focus area desired, and save as a separate 8MP file:
Why not meld the focus across the entire image, so that each pixel is at its optimum focus to simulate very large depth of field?
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