Ready Reckoner - Aerial Photography

PHOTO SCALE Total area of Photo PHOTO PP - PP* PP - PP*
  Acres Ha. Sq. kms length of side 60% Overlap 80% Overlap
2,500 82 33 0.3 0.06 km 0.23 km 0.12 km
5,000 327 132 1.3 1.2 km 0.46 km 0.23 km
7,500 735 2"98" 3.0 1.7 km 0.69 km 0.35 km
10,000 1,307 521 5.3 2.3 km 0.92 km 0.46 km
15,000 2,941 1,190 11.9 3.5 km 1.38 km 0.69km
20,000 5,229 2,116 21.2 4.6 km 1."84" km 0.92km
25,000 8,170 3,306 33.1 5.8 km 2.30 km 1.15 km
30,000 11,764 4,761 47.6 6.9 km 2.76 km 1.38 km
40,000 20,915 8,464 "84".6 9.2 km 3.68 km 1."84" km
50,000 32,679 13,225 132.3 11.5 km 4.60 km 2.30 km
75,000 73,528 29,756 297.6 17.3km 6.90 km 3.45 km
80,000 83,658 33,856 338.6 18.4 km 7.36 km 3.68 km
100,000 130,715 52,900 529.0 23.0 km 9.20 km 4.60 km
* PP-PP = Principal Point to Principal Point

Topic contact: earth.observation@ga.gov.au Last updated: May 8, 2013