The term
exposure is a carryover from classical photographic animation.
Traditionally when animation was "shot" or photographed directly
on to film, each composed frame had to be set-up on a special
table and recorded as a film exposure. In order to communicate
the set up instructions for the camera operator there were
special documents created called exposure sheets. The exposure
sheet described the order of placement in layers of the art work
as well as camera operating instructions and effects and timing
instructions. Exposure sheets were passed from directors to
track readers to animators to assistants to checkers and to
camera operators as the production work progressed down the
"pipeline". The exposure sheet in TBS is representative of these
traditional exposure sheets but it is greatly reduced in its
purpose. The TBS exposure sheet is still used to lay out the
basic timing of scenes and the layered order of composition
elements. The TBS time line replaces much of the more detailed
instructions that once were communicated on classical exposure
sheets
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