1. A method in a computer system for generating a presentation of a region-of-interest in an original image for display on a display screen, the original image having one or more images relating to the region-of-interest, the method comprising: establishing a lens for the region-of-interest, the lens having a focal region with a magnification for the region-of-interest at least partially surrounded by a shoulder region across which the magnification varies to provide a continuous transition from the focal region to regions outside the lens; subdividing the focal region into one or more facets, each facet for displaying a respective image relating to the region-of-interest; and, applying the lens to the original image to produce the presentation.