Glare evaluation is primarily based on Glare Rating (GR) (Reduce glare – UGR, GR and Ti in lighting design). The GR at any location on the field should be controlled to ≤50 (for broadcasting) or ≤55 (for local matches), with key viewing areas (such as behind the goal and the front of the sideline public areas) requiring particular attention. To ensure image quality, the vertical illuminance in the spectator area should be no less than 0.25 times the vertical illuminance of the field. These indicators should be included as constraints in the simulation and verification process during the design phase.

Uniformity is recommended to be controlled using two indicators: U1 = Emin/Emax and U2 = Emin/Eave. The horizontal illuminance uniformity of the playing field should be ≥0.5, and the uniformity of the key vertical plane facing the main camera should be ≥0.4; broadcasting/HD events usually require higher values ​​(e.g., U1h ≥ 0.60, U2h ≥ 0.80). Simultaneously, the illuminance change between adjacent grid points should not exceed 20%, and the ratio of average horizontal illuminance to average vertical illuminance should be between 0.5 and 2.0.

Illuminance levels and target values ​​should match the level of the event: approximately 200 lx for training/recreation, 500 lx for amateur matches, 750 lx for professional matches, 1000 lx for general TV broadcasting, and 1400–3500 lx for large-scale international HD broadcasting; the ratio of vertical illuminance to horizontal illuminance (Ev/Eh) is recommended to be approximately 0.5–0.75 to balance three-dimensionality and image quality.