1. Apparatus for capturing images of a record of micro-images, the record of micro-images including non-sparse images, the apparatus comprising: image acquisition means for repeatedly acquiring and at least temporarily storing successive non-sparse images from the record of micro-images; the image acquisition means including an area sensor disposed to receive light from the non-sparse images; and the apparatus further including a second sensor disposed to receive light from the record of micro-images, the second sensor being operatively connected to the storage means for supplying images to the storage means; correlation means for correlating successive non-sparse images from the record of micro-images to create a correlation matrix and determine if motion of the record of micro-images has occurred between successive images of the record of micro-images; the correlation means including means to: (i) calculate the Fourier transform of the correlation matrix to produce a phase spectrum, the Fourier transform defining a frequency space having axes and the phase spectrum defining a plane in the frequency space; and (ii) calculate the degree of movement of the current image from the reference image using the projection of the plane onto the axes of the frequency space; and storage means for permanently storing an image of the record of micro-images when motion has occurred between successive images.