A vertical photo was obtained by using an aerial camera with a 153mm. focal length. From an altitude of 1148m. above mean sea level. If the average elevation of the terrain photo is 230m., determine the scale of the photo. Click to Show/Hide Solution \[ PS = \frac{f}{H-h} \] \[ PS = \frac{153mm. (\frac{1m.}{1000mm.})}{1148m.-230m.} \] \[ PS = \frac{1}{6000} \leftarrow \text{answer} \]