Close-up Macro and Micro Photogrammetry and Image Perspective: A Comparative Studio on different Lenses at work with Small and Medium Size Object

The digital photogrammetry has renewed the approach to measurement for archaeologists, architects and many researchers, students, professionals in Cultural Heritage. Thus, most of the troubles coming from the more and more advanced software for photogrammetry processing came from purely photographic mistakes or poor knowledge about photographic tools. Here the focus will be on perspective and its influence in the result coming from medium and small size objects and finds. The study will present the results from the use of four different lenses for the same professional DSLR camera body: a Nikon D800e full frame 36 Megapixels, mounting the AF Micro-NIKKOR 60mm f/2.8D with 1:1 reproduction ratio (RT) (one of the best macro lens on the market), the Venus Laowa Micro 15mm f/4 with 1:1 RT (a quite economical super wide lens), a Nikkor Zoom 24-85mm AF with “macro” function (a classic in common set of lenses) and the classic Micro Nikkor 55mm F/2.8 with extension ring to reach the 1:1 RT (a piece of history of photography, the predecessor of the 60mm here in test). The full processing and procedure of matching the data will be presented to bring a useful contribution and reference for other scholars and operators

Under attack again. Difendersi all’ombra del “Monte del fuoco”. Il caso di Torre Albani di Montignano, Senigallia, Italia

Along the Mediterranean coast, the fortification system of towers has always the same function: defend the coast from all the attacks, often of pirates. This kind of system is a planned and well-organized network. The choice of the case study, the Torre di Albani in Montignano, near Senigallia (AN), built in the XIII century, has served for the analysis of the historical and technological aspects that characterized the towers in this part of Adriatic sea in the Modern Age. Interesting is also the comparison with the Torre Clementina in Portonovo (AN) built in 1716 by Pope Clement XI, 30 km far from Montignano, tower of a different period, but with the same interest for the relationship between the tower and the territory. This work aims to document all aspects of the tower, the construction type, the materials and the building model and it is in continuity with the work exposed by the same research team in the previous edition of this conference