Color Management Part 1

Instrumentation: Densitometers and spectrophotometers

To do that, we use an instrument—which instrument depends on what light properties we're interested in. A densitometer measures the amount of light reflected from a surface. It expresses the values along a logarithmic scale where 0.00 means all the light was reflected (the surface was white); 1.0 means 1/10 of the light was reflected; 2.0 means 1/100 was reflected (and the surface would appear black), and so on.