In previous articles, I covered how we control colour with software and hardware using design programs and the printers. There is another important piece of hardware too. It's a colour matching booth. Not a weird device that you climb inside and lock the door, but rather a station that has special fluorescent tubes that illuminate vertically mounted prints and proofs from above. The big problem to overcome with manual hardcopy matching of colour is the lighting conditions. There are so many different conditions, fluoresecent warm to cool tubes, halogen, daylight sunny and cloudy, incadescent blubs and now led lighting which all emit different colour. There is no easy solution but a good start is an industry standard, which just happens to be D50 or more commonly known as daylight.