Hi Anselmo, It would be of interest to know the diameter of the pinhole for each and approximately how well they perform. Thanks. Fritz
Date Height Temple City ================================= 1437 50 m Holy Sophie Istanbul 1468 90 m S. Maria del Fiore Firenze 1653 27 m S. Petronio Bologna 1743 26 m S. Sulpice Paris 1786 24 m Duomo Milano -
