2 PHOTOGRAMMETRY HISTORY OF EARLY …
As a geodesist, he invented the first tacheometer (his instrument was called a tachymeter) in 1839. In 1847 he was able to improve image quality of a lens system all the way to the edges by using three asymmetrical lens elements. He also developed an erecting lens imaging system in 1854. Porro developed a panoramic camera in ................
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