Close-Up, Macro and Micro Photogrammetry and Image Perspective: A Comparative Studio on Different Lenses at Work with Small and Medium Size Objects

Abstract

Giorgio Verdiani, Paolo Formaglini, Filippo Giansanti, St├ęphane Giraudeau

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.

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