Science and technology laid claim to the image as a mechanism for visual registration, with the result that it was scientists at this juncture in history who oversaw the birth of new imaging techniques. Where Jan van Eyck (if Vasari is to be believed) had experimented with alchemy and distillation' to improve the binding and drying of oil paint, the key inventions in the nineteenth century were mechanical and chemical applications developed in the laboratory. Visual images were still the indispensable key to intellectual development they had been in the mind of Leonardo, but now it was no longer necessarily the artist who would shape those images. The academic artists of the eighteenth and nineteenth centuries had been swayed by the ancient idea of ut pictura poesis, becoming caught up in the notion that visual art is fundamentally linguistic and narrative in character and hence, like language, can and must be encoded in clear grammar. Painting (and to a lesser extent sculpture), which still held out the promise in the Renaissance of becoming a vital link in the epistemological chain, was now reduced to the same status as literature - not even poetry - with the emphasis on the narrative component. History painting, in other words.
It ought not to be a surprise, therefore, that it was poets and novelists such as Charles Baudelaire (1821-67) and Émile Zola (1840-1902) who became fervent champions of the visual arts from the mid-nineteenth century, as we saw in a previous chapter. They stressed the role of imagination and emotion in the artistic interpretation of the world - something that was too important for mechanical photography, which was still in its infancy at the time. In a famous passage from 'Le moment artistique' (L'Événement, 1866), Zola argued, in what would become an important dictum for the twentieth century, that what art can add to reality is humanity.
PHOTOGRAPHY: THE ULTIMATE MARRIAGE OF ART AND SCIENCE
