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Your search for "aerial photograph" resulted in the following result(s).

technique Word or Phrase:Vertical Aerial Photographs  
Definition:Vertical aerial photographs are taken from immediately overhead using a camera fixed to the underside of an aeroplane. The camera points directly downwards at 90 degrees to the ground. Vertical photographs are particularly useful for identifying sites that survive as cropmarks. See also oblique aerial photographs.
technique Word or Phrase:Oblique Aerial Photographs  
Definition:Oblique aerial photographs are taken at angles of less than 90 degrees to the ground. They are usually taken by a photographer through the window of an aeroplane. Oblique aerial photographs are particularly useful for identifying archaeological sites that survive as earthworks, standing monuments and cropmarks. See also vertical aerial photographs.
technique Word or Phrase:Aerial Survey/Aerial Photographs  
Definition:Aerial photographs are taken during an aerial survey, which involves looking at the ground from above. It is usually easier to see cropmarks and earthworks when they are viewed from above. Aerial photographs help archaeologists to record what they see and to identify new sites. There are two kinds of Aerial photographs; oblique and vertical.

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