1. A method for sampling multi-spectral images of a dynamically changing scene, the method comprising the steps of: (a) sampling the dynamically changing scene with a mosaic color photosensor, said mosaic color photosensor providing a plurality of sequences of images of the dynamically changing scene, wherein each of said plurality of sequences of images is a distinct predefined color; (b) processing a first group of two or more images each provided from one of said plurality of sequences of images to optimize an exposure parameter for the first group, said exposure parameter determined by applying at least one exposure criterion to the first group while disregarding a second group of one or more images each from one of said plurality of sequences of images other than said sequences of images providing images for the first group; (c) setting an effective exposure for said mosaic color photosensor, said effective exposure for said mosaic color photosensor being set in accordance with said exposure parameter; and (d) generating a corresponding sequence of multi-spectral images from subsequent images from the first group.