If you plan to compare hard copy proofs to the images on your color monitors, you must view the proofs in a viewing booth with dimmable lighting.
Important: The viewing booth must be dimmable so that you can match the monitor luminance to the luminance in the viewing booth.
Matchprint Virtual provides excellent color alignment to hard copy proofs when proofs are viewed under bulbs from the original manufacturer in a Graphic Technology Inc. (GTI) or a JUST Normlicht viewing booth. If you use a viewing booth or bulbs by another manufacturer, color misalignment between hard copy proofs and virtual proofs may occur.