This presentation discusses scale as it relates to aerial photographs. It provides three examples of scale calculation problems: calculating the scale of a photo given the measured and actual lengths on the ground; calculating the scale of a photo given the focal length of the camera, flying height, and average terrain elevation; and calculating the actual length of something measured on a photo given the scale and measured length. The presentation is intended to demonstrate how to determine scale and make calculations related to scale for aerial photographs. It concludes by thanking the audience.

1. Presentation
on
Presented by
Mr .Amol V. Ghogare
Assistant Professor, Civil Engineering Dept.
SRES, SCOE, Kopargaon
.

3. • Example: You measure the straight length of a track
to be 2.5 mm and you know that the real ground
distance is 100 meters, what is the scale of the
photo?
Sol:-

4. • Example: A camera with a 152 mm focal length takes an aerial
photograph from a flying height of 2780m above sea level and the
average average elevation of the terrain above sea level is 500m.
What is the scale of the photograph?
Sol:-

5. • Example: The scale of an aerial photograph is
1:15,000. In the photo you measure the
length of a bridge to be 0.25 inches, what is
the length of the bridge in feet in real life?

6. Thank you