(Read More) 2008 Orthophoto - This document describes the processes used to create the orthoimagery data produced for the District of Columbia from 2008 digital aerial photography. THE OUTER PARTS DC WERE CAPTURED WITH LEAF-OFF CONDITIONS IN MARCH 2008. HOWEVER, FLYING RESTRICTIONS AND WEATHER DELAYED THE REMAINING AERIAL PHOTOGRAPHY CAPTURE UNTIL MAY 24, 2008 FOR CENTRAL DC. THERE ARE VISIBLE LEAF-ON AND LEAF-OFF SEAM LINES IN THE AERIAL ORTHOPHOTO. The project area covers the entire District of Columbia which is approximately 69 square miles. The digital imagery was used to create natural color digital orthophotography with 16cm pixel resolution. The final orthophotography deliverable products for this project consist of 328 ortho tiles at a scale of 1 to 2400. The tile dimensions are 800 meters by 800 meters. A corresponding MrSid image was created by mosaicking the 328 ortho tiles together and compressing the image using an 80 to 1 compression ration.