It's important to underline that Della Porta and Fontana were not mere performers of Michelangelo's drawings; in fact, they had the merit of the technical execution of a firm that sanctioned an important stage of technological advances at the end of the sixteenth century.
Penting untuk digarisbawahi bahwa Della Porta dan Fontana bukan sekadar pemain gambar Michelangelo; Sebenarnya, mereka memiliki kelebihan dari pelaksanaan teknis perusahaan yang menyetujui tahap penting kemajuan teknologi pada akhir abad keenambelas.