A vertical photograph is taken from a flying height H above the ground, and the camera focal length is f. For level terrain, the approximate photo scale is:
Correct answer: C. f divided by H
- A. H plus f
- B. H divided by f
- C. f divided by H
- D. f multiplied by H
Explanation
For a vertical photograph over level ground, the representative scale is approximately focal length divided by flying height above the ground. Using H divided by f gives the reciprocal scale and is therefore incorrect.
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