Puybaret, Thanks for your answer. [:)] And maybe what I am seeing is only a difference of tweaks made between the two renderers. I only have time to show a very small sample of what I see as sun shadows unfortunately, but maybe it will give you an idea of what I see. It is a subtle difference, and I might be making a mountain out of a mole hill, and I do apologize if I am.

This is 3.0 v8 This time is 9pm with the sun at 120 degrees



This is 3AM Sun at 240 degrees which is as far as I could get the source of light away from the scene



This is 2.6 with the Advanced Renderer









The files are as close to the same as I could get. And I do have to say I am very happy and pleased at the Sunflow ability now to handle transparent textures, and thank you for adding this into SH3D. Almost all my trees have them. [:D]