Hardness light and shadow on emissive light

Hello, I’m getting hardness shadow when activating emissive material.
Is there some whey to let it softner on the edges?
This is some example of hardness light on edges… the same thing happens on cone lights thought the mirror…

Hello, to adjust cone lights( spotlights), you could adjust Light Source Radius higher to make the shadow softer.
But this is no such option for emissive materials, and you could uncheck Cast Shadow for them, and use artificial lights instead.