. Fig. I. vi'RiiS pRtoi Tin; aik (Fubkuaky 1,1; .'. 1 C.\THEDR.\I, AND HALL IN THE CENTRE OE THE PICTURE. A unique photuqrciph, never before published. downwards either through an aperture in the floor of the aeroplane or strapped to the side of the fuselage. It was usual for the pilot to fly on a level keel at an altitude decided previously, whilst the observer took the photographs as desired. It was generally found best to fly up-wind whilst making the exposure in order that the ground speed of the aeroplane might be as little as possible, though it was found that when taking
. Fig. I. vi'RiiS pRtoi Tin; aik (Fubkuaky 1,1; .'. 1 C.\THEDR.\I, AND HALL IN THE CENTRE OE THE PICTURE. A unique photuqrciph, never before published. downwards either through an aperture in the floor of the aeroplane or strapped to the side of the fuselage. It was usual for the pilot to fly on a level keel at an altitude decided previously, whilst the observer took the photographs as desired. It was generally found best to fly up-wind whilst making the exposure in order that the ground speed of the aeroplane might be as little as possible, though it was found that when taking photographs at a great altitude an extremely fast exposure was not necessary. Photographs were taken either singly of specific objects, or in the form of an overlapping series covering a long line of country. These photographs were then printed and joined up in one continuous strip, showing, for example, a sector of the enemy's trenches. When it was desired to photograph any given area, one or more machines flew over this area on certain pre- determined lines, each taking a series of strip photo- graphs. These were afterwards fitted together in a
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Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookleafnumber185, booksponsoruniversityofto, booksubjectscience
