Photography did not have a single inventor, as it was the consequence of a successive series of technologies dating from the 19th to the 20th century. Before photography was invented as we understand it today, the development of various technological objects was necessary. The first of them was the camera obscura, which was used even in Antiquity, in the 5th and 6th centuries BC. C. However, it was not until the 19th century that this technology led to the invention of artifacts more similar to photography. Among them the daguerreotype, heliogravure and cyanotype were mainly disseminated.