1. A digital image acquisition system, comprising an apparatus for capturing digital images and a digital processing component for initiating a new image capture upon determining that a threshold camera motion blur has occurred in a captured digital image based on a real time analysis of the captured digital image and at least one further image each acquired with a same sensor, such that at least a same portion of said same sensor captures at least a portion of each of said captured digital image and said at least one further image within a temporal range that includes an exposure period of the captured digital image, and times proximately before and after said exposure period, and of nominally the same scene as that of the captured digital image, and wherein said digital processing component is arranged first to align at least portions of the image data of said captured digital image and said one or more relatively low resolution reference images, and then to compare the image data of said captured digital image and said one or more relatively low resolution reference images for determining a camera motion blur function, and to initiate said new image capture upon determining that said threshold camera motion blur exists.