sentences:  Just as the ambrotype was a negative whose silver images appeared grayish white and whose dark backing made the clear areas of shadows appear dark, so the tintype, actually negative in its chemical formation, was made to appear positive by the black plate.On the other hand, there is Instant film which develops the image instantly as soon as it is ejected from an Instant camera (without any processing by the photographer or in Photographic Labs).Photographic paper, however should be processed after exposure in a dark room or Photographic Labs.