1. An image processing system, the system comprising: an image storage device to store a sequence of images in different focal planes, at least a portion of the sequence of images occurring before receiving a signal to store an an-in-focus image, and the sequence of images in different focal planes comprising a repeating series of images with a base focal plane, a far focal plane, and a near focal plane; an image processor to fuse at least two images after receiving the signal to store the all-in-focus image from a user, the fusing resulting in the all-in-focus image, wherein the at least two images have different focal planes, and to fuse at least two images to result in the all-in-focus image, the image processor is to: select three successive images from the sequence of images, the three successive images including an image with the base focal plane, an image with the far focal plane, and an image with the near focal plane; and fuse the focused portions of the images to result in the all-in-focus image.