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Most people know what a Sepia Tone photograph looks like. But do they know that the term originated with the use of pigment from a fish cephalopod?

Sepia tone is a type of monochrome photographic image in which the picture appears in shades of brown as opposed to greyscale as in a black-and-white image. It was originally produced by adding a pigment made from the Sepia cuttlefish to the positive print of a photograph taken with any number of negative processes. The chemical process involved converts any remaining metallic silver to a sulphide which is much more resistant to breakdown over time. (Source: Wikipedia)

Now you have some useless photographic knowledge to impress your friends with.

Canon 5D, Canon 70-200 f/4L lens – 1/200 second, f/5, ISO 100


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