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30-degree camera depression angle (fig. 4-4). It resembles the view a pilot sees when approaching the target. High-oblique photographs are useful in guiding pilots toward a photographic target, a bombing target, or a helicopter landing site. High-oblique photographs are also used for orientation purposes because large areas are covered. A high-oblique photograph is particularly suitable for pictorial and illustrative purposes because it provides a true perspective view of land surfaces. It is easier for a person on the ground to locate and identify objects in a high-oblique photograph than in a low oblique or vertical photograph. covers a relatively small area. The subjects in a vertical photograph--as if you were viewing them from the top of a tall building. A low-oblique photograph is photographs are made from high and low altitudes, respectively. This is not the case. The aircraft altitude is not a determining factor in whether an oblique is classified as high or low. Remember, the horizon is the determining factor; high sky, low no. As a matter of fact, most high-oblique photographs are made from a Advanced Photography Course |
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