Sepia Tone Photography
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
4 Comments:
Ah, minor detail here.... The cuttlefish is not a fish. Rather it is a cephalopod (like octopus or squid) that has an amazing intellect.
The cuttlefish is not a fish. Rather it is a cephalopod
Ahhh... the professor has spoken :) Thanks for the clarification.
Interesting!
So, why did they add the pigment in the first place?
Did they just like the different tone?
Or did they know the chemical differences would make the photos more resistant to aging? If so, how did they know?
I like this photo. The angles of the arms and legs are interesting.
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