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Film stock

What is film?

Rolls of film are always known as film stock. You will hear unexposed film referred to as raw stock. Once it is exposed, but not yet processed, it becomes known as the rushes. Once exposed and processed, it is the master negative. Confusingly, the print or tape sent back to production by the laboratory the morning after processing is also known as the rushes. In America, these rushes are known as the dailies, which removes the confusion.

Today’s colour film stocks are fairly complicated affairs, consisting of a support medium, known as the base, which is coated on one side with as many as nine layers of light-sensitive emulsions. In addition, there are several other layers such as the yellow filter layer. All of these ...

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