Description

https://ufologie.patrickgross.org/htm/brazil58.htm

The negatives were analyzed by Navy and civilian experts from the Cruzeiro do Sul Aerophotogrammetric Service. The previously cited Navy document states that a technician from the Hydrographic Navy Department concluded there were no signs of tampering with the negatives which showed "the object photographed." A "more complete and thorough examination" was made by photo technicians from Cruzeiro do Sul (a private airline company), "including microscopic, for the verification of granulation, verification of signs, luminosity, and details of contour." The Cruzeiro experts concluded:

"There was on the above-mentioned negatives no sign of montage, all indicating it to be a negative of the object really photographed;
"Any hypotheses of later montage were removed; it would be impossible to prove either the existence or nonexistence of prior montage, which requires, however, extreme technical skill and circumstances favorable to its execution."