Vectorscope (Polar)
Circular chromaticity scope tracking hue rotation and chroma radius
R: Red (0°) Y: Yellow (60°) G: Green (120°) C: Cyan (180°) B: Blue (240°) M: Magenta (300°)
Color Geometry Note: Unlike 1-dimensional saturation metrics, a vectorscope tracks chromaticity in polar coordinates $(r, \theta)$. Radial distance from center reflects chroma saturation, while angular rotation reflects hue shifts (e.g. warm skin-tone deflection).