[filmscanners] RE: Newish Digital Tech

["Austin Franklin" <austin@darkroom.com>]

> > But the gotcha is that the sensor in the Foveon case is not at a single
> > depth, its a 'region' of doped silicon.  And so you are going to get an
> > averaged value, and you are also going to get some red
> propogating all the
> > way to the Blue and Green sensors quantum mechanically - ie
> > probablistically.
> >
> > So you can probablistically compensate for it, but its going to
> take time
> > for them to tune the compensations.
>
> Good description of the mechanism.
>
> Finding the right arithmetic to sort out the R, G and B values is simply a
> matter of building a profile, something that is routinely done with a
> standard target and profiling software.

Paul,

It is ONLY that simple if there is repeatability and consistency.  Neither
of which I am convinced the Foveon sensor has.

Austin

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