Tintypes were made possible with the introduction of wet collodion. In the case of the tintype, the exposure is made on a thin sheet of metal with the result that the tones are reversed to create a positive image. Like the daguerreotype, the…
Related to the earlier tradition of lantern slides on glass plates, slides made from celluloid film became a commonplace way of circulating photographic images in the twentieth century.These slides featuring the sites and artworks of Toledo, Spain,…