Early aerial photographic reconnaissance in World War I relied on an aircrew member, usually the observer, to operate heavy, awkward hand-held cameras.
Sources
- Aerial reconnaissance in World War I (en.wikipedia.org)
- https://www.westernfrontassociation.com/world-war-i-articles/trenchmapper-by-the-western-front-association/aerial-photography/ (westernfrontassociation.com)
- https://www.military-history.org/feature/aerial-photography-in-wwi.htm (military-history.org)
- https://www.ingentaconnect.com/content/asprs/pers/2008/00000074/00000001/art00006?crawler=true (ingentaconnect.com)
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