medieval-religion: Scholarly discussions of medieval religion and culture
Because it's blindingly white (chalk-lime-glue base) and white shines
through the colours over it making them extra bright. Don't confuse this
with mixing white paint with coloured pigments: this will make them paler.
It's an optics thing, which AFAIK was known in Greek times already. Mind
you: medieval craftsmen also knew that white was a good ground for wall
painting that's why all walls which were going to be painted got at least a
couple of coats of whitewash, but more often a chalk or gypsum ground or
gesso. Gesso was the bottom layer of all woodwork before it was painted.
Henk
why would gesso allow for a *brighter* color?
c
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