High Quality Content by WIKIPEDIA articles! In photography, toning is a method of changing the colour of black-and-white photographs. In analog photography, toning is a chemical process carried out on silver-based photographic prints. The effects of these processes can be emulated with software in digital photography. Beginning in the 1880s, sepia was produced by adding a pigment, called sepia, made from the Sepia officinalis cuttlefish found in the English channel, to the positive print of a photograph. Most toners work by replacing the metallic silver in the emulsion with a silver compound, such as silver sulfide (Ag2S) in the case of sepia toning. The compound may be more stable than metallic silver and may also have a different colour or tone. Different toning processes give different colours to the final print. In some cases, the printer may choose to tone some parts of a print more than others.

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