@dostovel My advice: “Do not mess with the Radius of the Sun Light!”
It has something to do with how far the light reaches with the Point and Spot Light. With the Area Light it’s the size.
With the Sun Light it seems only to affect the Strength; a Radius of 0.01m and a strength of 2, gave me the same result as a Radius of 1000m and a Strength of 1.
In Eevee however, a smaller Radius of the Sun Light gives a brighter image, so better leave the Radius alone and do not try to understand it;)
