What is the scale of vertical photography if it is taken with a 6-in focal length camera at an altitude of 5,750 ft above mean terrain?
A)1 / 953
B)1 / 2,875
C)1 / 11,500
D)1 / 34,500

Question

Quizplus · Accepted Answer

The scale of vertical photography taken with a 6-in focal length camera at an altitude of 5,750 ft above mean terrain is 1 / 11,500.
Solution
Use the scale equation S = f/H-h
Where S = scale
f = focal length of camera (in)
H = flying height above datum (ft)
h = average terrain elevation (ft)
S = 6 in / 5,750 ft
= 6 in (1 ft/12 in) / 5,750 ft
= 0.5 ft / 5,750 ft
= 1 / 11,500

What Is the Scale of Vertical Photography If It Is