I dont have any right answer for your question and that is why
I'm very interrseting by the answer you can get from internet.
I teach Photography in a school of Art in south of france, and a lot of
student ask me similar questions.
Thanks by advance to forward me good answer.
Regard,
Pierre.
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| Pierre Drap \
| GAMSAU ura CNRS N. 1247 \
| Ecole d'Architecture de Marseille-Luminy \
| Photogrammetrie Architecturale \
| 13288 Marseille FRANCE \
| Tel (33) 91 82 71 70 (secretariat) \
| Tel (33) 91 82 71 38 \
| Fax (33) 91 82 71 71 \
| e-mail pdr@gamsau.cnrs-mrs.fr \
| URL http://www-gams.cnrs-mrs.fr/ \
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