🚀Photogrammetry in Moon Photos 📸 - What were crosshairs (fiducials) for?

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• Are the moon landing p...
Since the fiducial points' locations on the photographic plate were known with great precision, it was possible to get exact bearings of anything in the photographs, especially when several photos were taken at different angles It is part of a super exact science called photogrammetry These crosshairs facilitate photo matching and stitching of several photos together to make one large panoramic photo of a scene For the moon photography it was simply to get reference information So it is said that many of the reference crosshairs appear behind certain objects This would support the theory that crosshairs were added at a later date and were not in the original shots