The Gigapixl Project is a massive undertaking to capure portraits of America with a custom-built, ultra-high resolution camera. The 1000 megapixel images capture incredible details. In one of the images of Yosemite, a 0.05% crop shows 2 climbers on the face of Half Dome, who are invisible in the original image. This Wired article has more cool info about the camera, including this bit:

The lens is mounted with micrometer screws and dials that can be adjusted to within one thousandth of an inch. To focus the lens accurately, Flint measures the distance to every major object in the field of view with a laser range finder. He then plugs the distances into a set of algorithms that tell him how to adjust the screws.