In the previous versions of RegiStax using large images that do not fit your screensize was not easy. Finding and defining a point to use for alignment was often a matter of a difficult search on the image (no overview). In RegiStax 4 this problem has been solved. You can now set the option “view full image” which will fit your image (as a preview !) to the screensize you are working in. In conjuction with the “show zoomed image” function you can accurately aim at a specific point. The view full image option is also available at the wavelet-section.