This presentation discusses scales used in photographs. It explains that scale is the ratio of an object's size in a photo to its actual size on the ground. Scale can be expressed through a unit equivalent, representative fraction, or ratio. Knowing the camera focal length and aircraft altitude allows one to determine the scale of a vertical photograph. The presentation was given by Mr. Amol V. Ghogare of SRES, SCOE, Kopargaon on the topic of scales used in photographs.

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

2. Scale of Photograph
 Scale is the ratio of the size of any object or feature or area within
the photo to its actual size (i.e. 1 unit on the photo equals "x" units
on the ground). Scale may be expressed three ways:
• Unit Equivalent
• Representative Fraction
• Ratio

5. Scale of Vertical Photograph
If you know the camera focal length and the flying altitude of the
aircraft you can also determine the scale of a photo.

9. Thank you