Contribution of secondary images to the observed accretion disk flux for two inclinations i = 30° (left panel) and 80° (right panel) and three BH spins a = −1 (pink line), 0 (red), and 0.95 (blue) as computed with the numerical ray-tracing code ARCMANCER. The contribution of the secondary images for i = 30° and a = 0.95 is below 10⁻⁵. The solid lines correspond to the full luminosity and the dashed lines to the contributions of the secondary images.