Aerial Photography

The public may download digital aerial photography products at no cost from the Earth Resources Observation and Science Center (EROS). For those who specifically need paper or film products, there is a list of USGS Business Partners who provide aerial...
No. A photographic enlargement only appears to show more detail than a 9-by-9 inch photograph. Photographic resolution (or image resolution) deteriorates with each enlargement factor.Photographic reproduction of images from the USGS film archives ceased...
Each National Aerial Photography Program (NAPP) frame covers a 5-by-5 mile area at 1:40,000 scale. Each National High Altitude Photography (NHAP) color infrared (CIR) frame covers an 8-by-8 mile area at 1:58,000 scale. Each NHAP black-and-white (B/W)...
Yes, customers will need to acquire at least 2 consecutive digital images from the same roll and then create transparencies or contact prints to view them with a stereoscope. A stereoscope is a device for viewing a stereoscopic pair of separate images,...
The public may download digital aerial photography products at no cost from the Earth Resources Observation and Science Center (EROS) via EarthExplorer or GloVis.Customers can request a higher resolution aerial or declassified image to be scanned for a $...
The aerial photographs date as far back as the 1940's for the United States and its territories. Availability of specific coverage, film type, and acquisition dates vary from agency to agency.The Earth Resources Observation and Science Center (EROS) in...
Color-infrared (CIR) aerial photography, often called false color photography because it renders the scene in other than the normal colors seen by the human eye, is widely used for interpretation of natural resources. Atmospheric haze does not interfere...
You will need a place name, the latitude and longitude, or any other information that will help to distinguish your area of interest.Learn more:Maps, Imagery, and PublicationsProducts & Data Available
Focal length is the distance from the middle of the camera lens to the focal plane (i.e. the film). As focal length increases, image distortion decreases. The focal length is precisely measured when the camera is calibrated. Knowledge of the focal length...
Simply defined, scale can be expressed as the ratio or proportion between a distance on the aerial photographs (or maps) and the actual distance on the ground or land surface. It is a ratio that could represent any unit of measurement and this ratio is...