Giorgio VERDIANI | Paolo FORMAGLINI | Filippo GIANSANTI | Stéphane GIRAUDEAU
(Dipartimento di Architettura, Florence University, Florence, Italy)
Keywords: Photogrammetry; Close-up; 3d modeling; Digital photography; lenses;
The digital photogrammetry has renewed the approach to measurement for archaeologists, architects and many researcher, student, professionist, involved in Cultural Heritage subjects. The quick approach and the possibility to use almost any digital cameras has created a sort of “nice 3d models for approach that have definitely enhanced the way to use the cameras to capture architecture, objects and finds. 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.
As well stated in previous studies, there are various way to take pictures more efficiently and gain more quality in the final results, but in the paper proposed 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 very different lenses and a short dissertation about perspective, depth of fields and their influence in producing well working pictures for the photogrammetric use. The main structure of the study will concentrate on three lenses used on the same professional DSLR camera body: the AF Micro-NIKKOR 60 mm f/2.8D with 1:1 reproduction ratio (RT), the Venus Laowa Micro 15mm f/4 with 1:1 RT and a Nikkor 18mm F3.5 MF used with extension tubes to reach a 1:1 RT. The subject of the test shooting will be a set of significant finds from the Archaeological Museum in Florence. The full processing and procedure of matching the data will be presented to bring an useful contribution and reference for other scholars.
Relevance conference | Relevance session:
An operative study for an operative audience
We hope to bring a useful contribution on the operative level in the choice of the correct tools
GUIDI, G. / GONIZZI, S. / MICOLI, L.L. (2014): Image pre-processing for optimizing automated photogrammetry performances, in SPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume II-5
MANGANELLI DEL FÀ, R. / RIMINESI, C. / TIANO, P.(2015): Monitoring of the surface pattern of artistic and architectural artefacts by means of ultra close range photogrammetry, in European Journal of Science and Theology, April 2015, Vol.11, No.2, 179-187