Martin, Where did you get that note from: > Just a note: "It is STRONGLY RECOMMENDED that only the 50% block is > used to calculate gray balance curves for offset presses, or any other > device on which gray balance is inconsistent or hard to measure", > Calibrating, Printing and Proofing by the G7 Method v6. That is inconsistent with everything that is known in North America about the G& method and was discussed publicly up to the last GATF Color Management Conference in Phoenix Arizona, in December 08. Are you sure? This can't be. MfG / Roger