http://www.pinktentacle.com/video/prism_movie.mpg
check this out, it's a video of the first output of a japanese satilight that can create 3d images of the earth using stereo cameras. Notice how it has slopes steeper than vertical. It can capture objects as small as 2.5m accross.
[quote]On February 15, the Japan Aerospace Exploration Agency (JAXA) exhibited the first photographic images captured by the Daichi advanced land observing satellite launched in January. Daichi is equipped with the three types of sensors, including the world