Collage -technique of an art production, primarily used in the visual arts, where the artwork is
made from an assemblage of different forms.
Sepia Toning- a
specialized treatment to give a black-and-white photographic
print a warmer tone and to enhance its archival qualities.
Selenium Toning- a
popular archival toning process, converting metallic silver to silver selenide.
Duotone- a halftone
reproduction of an image using the superimposition of one contrasting colour
halftone over another color halftone.