WILD RC-8 view camera
The National Geographic Institute has carried out and preserved the aerial photographic coverage of Belgium since 1947. This task is one of the stages in the mapping of the country. It takes place prior to reconnaissance on the ground, and the drawing of the map in the Lambert projection.
Aerial photography has been used in cartography since the end of the 1st World War. In Belgium, the main priority was restoring the geodetic network which was destroyed during the war. The photogrammetric service, which was proposed in 1922, only became operational in 1947.
Photogrammetry is a technique whereby measurements can be made from photographs using parallax.
This silver photography was in black and white in the aircraft, and an operator controlled the winding of the film by relying on details on the ground. To extensively cover a map sheet of 640 km², the aircraft made six east-west return flights at an altitude of 1000 feet (3000 m). During the flight, around 150 photographs were taken with east-west and north-south flyovers.
The WILD RC-8 camera with 153.16 mm lens, F-stop: 5.6 and the yellow filter are the last remaining pieces preserved from this mission, which is now outsourced.