Lens Metric Scores (or Optical Metric Scores)

DxOMark reports lens performance Scores for five Lens Metrics, each having its own unit of measure: Sharpness (P-Mpix), Distortion (%), Vignetting (EV), Transmission (T-stop), Chromatic Aberration (┬Ám scaled on a 24x36mm sensor).
Read more about scoring Lens Metrics.