Digital BW, The Print

> From: Steve Kale [mailto:stevekale@...]
>
> Well it does have a gamma.  It's just not linear ie can't be
> expressed by a single number.

But gamma _is_ a single number. "Gamma" is the greek letter given to the
exponent in the formula that relates numbers or voltages to luminance: the
luminance is the numeric value or voltage, expressed as a fraction from 0 to
1, raised to the gamma power, multiplied by the maximum luminance. To say
that sRGB has a "gamma" of 2.2 is only an approximation.

--

Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@...