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Re: filmscanners: Profiling negative films
In a message dated 4/25/2001 0:08:19 AM EST, michael@shaffer.net writes:
> Which isn't to say Ed has a few issues to work out. Ed may have more to
> say, but I believe his evaluation of Q60 target results only in a
> matrix-type profile, which, generally is a simplification of a device
> profile.
As long as the sensor is linear, there's nothing that can even
theoretically be more accurate than a 3x3 matrix transform. This
is what VueScan uses.
Only when there are nonlinearities, such as with inks on paper,
do you need more than 3x3 matrix transforms.
Regards,
Ed Hamrick
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