His technical skill allowed him to translate the soft transitions of oil paint into the precise lines of copperplate engraving. In works like Modesta e Vanità, he captured the subtle expressions and drapery of the original compositions with clarity. Campanella focused on the balance of light and shadow. He used varied hatching techniques to suggest volume and texture without the use of colour. This disciplined approach defined the Neoclassical aesthetic of the late eighteenth century.

Modern collectors value these prints for their architectural quality and historical accuracy. They function as windows into the private collections and public monuments of Rome during the Enlightenment. The monochrome palette of his engravings fits well in contemporary interiors that favour clean lines and classical subjects. His depictions of figures like Terpandro and Pindaro provide a sense of historical continuity. These works are a sophisticated alternative to modern posters.