Soft Proofing — Virtually a Lock

IPA has arranged to have controlled viewing stations on hand for the monitors to be set up in, but the choice of monitor and all calibration is being left up to the individual vendors. Sharma says some adjustment may also be made to the general room lighting conditions for the test.

Along with the visual assessment of color match, the patches displayed (from CMYK data) on the monitors will be measured using a “telespectrocolorimeter” to check the accuracy with which the soft proofing systems are able to establish a relationship between CMYK and L*a*b*. “We are not calculating the Delta E between a press sheet and the screen,” notes the project leader.