1. A method comprising: applying a lens to an image, wherein the lens includes: an extent of the lens, a focal region having a magnification and a perimeter shaped according to a radius extending from a plurality of line segments, wherein one of the plurality of line segments has a non-zero angle with respect to another of the plurality of line segments, and a shoulder region having a width between the focal region and the extent of the lens, wherein the shoulder region provides context for the focal region with respect to a portion of the image outside of the lens by preserving visibility of information surrounding the focal region.