G7 Master Certified

G7® specifies the components of an image that define a similar "visual appearance" to the human eye.  To do this, the G7 Specification:

•defines a colormetric definition for gray balance

•specifies gray balance in the midtones, image weight and image contrast from the highlights to the shadows are the factors that determine likeness of the visual appearance of an image

•defines the ideal colorimetric black and CMY gray-tone curves for an image

•specifies a step-by-step method for calibrating proofing systems and presses to these tone curves

Frequently Asked Questions about G7

What does the G7 mean?

The name G7 was derived from “G” for gray balance and the 7 ISO colors, CMYK/RGB. G7 is not the same as GRACoL 7 which was the 7th Edition of the IDEAlliance GRACoL Specification.

Is G7 a printing standard? Or a proofing standard?

Actually G7 is neither a printing standard nor a proofing standard. In fact, it is not a standard at all. G7 defines process controls for the neutrality and tonality of an image whether on a proof or from a press of any kind.