Digital BW, The Print

Hello Evan.
The instrument measures can also be subject to a bit of deception.
Things such as the illuminating source spectra (ie:level of UV it
contains etc), inclusion or exclusion of UV filtration of source or
sensors, paper fluorescence or lack of it and so on. I suspect that
the instrument definition of precisely "neutral" would end up not
actually being all that precise across a sampling of commonly
available and affordable instruments. Given that there is no objective
proof that any two or more individuals actually see the same with any
degree of precision anyway, it probably comes back down to what "you"
see as neutral and whether or not it is acceptable to the audience you
intend it for. I believe the best you could hope for is to pick an
instrument, measure what you consider neutral, and ask for the exact
same model instrument's readings from then on and hope your source of
readings has maintained calibrations. 

Regards
Duane



--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "evanj1969"
<evanj69@...> wrote:
>
>  some of this can be subjective when based just on visual "readings", 
> but when measuring the LAB values we find our eyes (or desires) 
> deceived us.
> 
>  evan
>