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Metadata: EXPO field |
EXPO stands for exposure and indicates the film exposure quality. Possible
values are "N" (normal), "U" (under-exposed), "O" (over-exposed), "F" (out of
focus).
The qualitative nature of this field leads to subjectiveness in the data.
There is no distinction between extreme or slightly underexposed/overexposed.
This field is not being cataloged beginning with STS093 (July 1999).
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