microsoft ULTRACAM introduced a 210 mm lens for the UltraCam Eagle digital aerial camera system. The 210 mm lens reportedly captures the same high dynamic, high quality, detailed imagery as other UltraCam systems, with the added benefit of flying at high altitudes, e.g., 5 cm imagery at a 2,000 m altitude. This allows data collection to take place over restricted airspace such as cities, without applying for special permits.

According to Microsoft, the 210 mm lens returns accurate geometry even from a high altitude. Also, the small field of view minimizes building lean for tall buildings, allowing full utilization of the 20,010 pixel swath width for ortho-image production. Occlusions are minimal even for narrow streets or alleys. www.microsoft.com/ultracam/