Sale on canvas prints! Use code ABCXYZ at checkout for a special discount!
Sepia toning is a specialized treatment to give a black-and-white photographic print a warmer tone and to enhance its archival qualities. The metallic silver in the print is converted to a sulfide compound, which is much more resistant to the effects of environmental pollutants such as atmospheric sulfur compounds. Silver sulfide is at least 50% more stable than silver. There are three types of sepia toner in modern use; Sodium sulfide toners - the traditional 'rotten egg' toners; Thiourea (or 'thiocarbamide') toners - these are odorless and the tone can be varied according to the chemical mixture; Polysulfide or 'direct' toners - these do not require a bleaching stage. Nowadays digital camera photographers take advantage of the...
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