Il De Prospectiva Pingendi e lo spazio
In: Quaderni dell'Istituto di Storia dell'Architettura: n.s. 2019, 2020
De Prospectiva Pingendi
De Prospectiva Pingendi written by Piero della Francesca is the first illustrated treatise dedicated to the perspectiva artificialis. The main issue of perspective is the correct reduction of the apparent sizes. Piero describes this reduction by means of a sequence of ratios in which the denominator represents the distance of the observer from the picture plane and the sequence, in itself, describes the diminishing of the sizes perceived by that observer. This Law, considered erroneous by the first exegetes of the treatise, is instead not only correct, but also very efficacious since it expresses, with a unique and simple expression, the interaction between the two factors which determinate the size and the form of the perspective image.