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[filmscanners] Re: Density vs Dynamic range>AUSTIN (2a)

Austin writes:

> The CCD, analog front end, A/D etc. do not
> care a wit about the A/C nature of the signal.
> They simply sample a DC voltage (or current)
> at a single point in time.

But not in space.  The signal is thus variable in the spatial domain.  It
has to be variable in _some_ domain, or it's not a signal.  That was my

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