Combined with the CCT, each light can also have a Green or Magenta tint, which is displayed as CC# (Color Correction Number) or CCi (Color Correction Index).
When film was used as the standard, CC# and CCi had a direct relationship to specific color correction filters and gels. With the advent of digital sensors, there is no longer a direct correlation, and CC#/CCi simply serve as a basic indicator of overall green/magenta shift in a light.
Lights with a Green/Magenta adjustment setting are listed as 0/0 since they can be dialed in to perfectly neutral.
A CC# of 0.5M for example, indicates a slight green tint, with a magenta gel being necessary for correction to neutral.
The data in this table is listed in one of two ways:
Single Color Lights: 0.4M
Bi-Color Lights: -0.5G/0.2M (@ min color temp/@ max color temp)
Higher quality lights will have less tint shift than lower quality lights, which is important for matching multiple lights and achieving accurate color reproduction. The ranges below represent the generally accepted tint variation of a light:
0-0.5: Great
0.6-1: Good
1.1-1.5: OK
1.6+: Poor
Note: For bi-color lights, the tint value may vary as the CCT changes.