Definition:
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Each (x) output represents a focal distance
that is supported by the imager. The values are specified in
1/100ths of an inch, but the focal distance increments and
decrements are not that fine. The focal distance is defined from a
curve equation whose constants are calibrated during factory setup.
The output value is in terms of inches, and it is multiplied by 100
to remove the decimal place. For example, an output of 375 would
signify a focal distance of 3.75".
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