DIGITAL PROOFING -- Taking Measure of a Proof

When a CRT display is used adjacent to a light box viewer, even slight differences between the systems become readily apparent. This problem can be addressed by selecting viewing equipment that:

* has uniform intensity, particularly from top to bottom; and

* contains light bulbs or fluorescent tubes that remain consistent over time and from lot to lot. (Commercially available D50 fluorescent tubes from different manufacturers—or even different lots from the same supplier—can vary significantly from the design center point of 5,000 K.)