Does the spot backlight need spotlight or astigmatism?

Astigmatism. Because the light intensity of the astigmatism lamp is low, its luminous angle is large, which can reach more than 120 degrees, so its luminous range is large, and the light emitted is uniform, just like the light emitted by ordinary lighting lamps, so that it will not be too dazzling when it is broadcast live, and it can better highlight the people on the scene.