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University of Padua University Library System Antique and special collections section Botanical Garden Library
Digitisation of the Botanists portrait collection (January 2009)
The Botanists portrait collection contains 2,380 portraits of Italian and foreign botanists kept at the Padua Botanical Garden Library.
This is a teaching and information video documenting certain steps in the process of digitising the collection.
The digitisation laboratory set
Digitisation laboratory set comprises: 2 light sources,
image capture station: surface covered in black cloth,
easel with colour scale,
digital camera mounted on pillar,
post-production station (optimization of digital images by balancing brightness, contrast, etc., and photo retouch where appropriate).
Digitisation of positives
Cleaning of black cloth with brush to remove fluff;
use of white cotton gloves to avoid fingerprints on material being reproduced;
levelling of surface and digital camera;
positioning the photograph so that the sides are parallel with the easel;
image capture front and rear (rear, to record any handwriting or stamps);
Digitisation of negatives
Positioning of plate or film negative on screened backlit surface;
adjustment of digital image obtained.