Wrong shadows on invisible plane

I’ve got two trees here with partialy transparent tga textures. The shadows they cast on themselves are all fine but the shadows on the invisible floor are black, I’m talking x000000. I’ve tried brighter ambience under “World” and increasing the brightness of my sun. Nothing works. Why?

Actualy the only thing that works is changing my sun into a regular lamp but then the shadows become too blurred.

Very easy: In the “Shadow and Spot” tab, in the lamp panel, you can change the color.

No :confused: I mean seriously, think about it.

Well i am serious, you can change the shadow color :slight_smile:

The shadow colour is already brighter than black in that pic.