[choo-chee]

I was thinking, maybe the render will speed up if I use a big emitter instead of physical sun. But unlike the sun, emitters always seem to have fuzzy shadows, too fuzzy: losing details such as the window's profiles. Is there a way to do that ?

[Bige]

use a smaller emitter, should do the trick

[choo-chee]

tried very big, tried very small.... tried strong and far, strong and near, weak and near, duplicated.... nothing. always fuzzy.

[macray]

You checked the scale i assume?

[choo-chee]

sure. I render with p-sun and it's good but slow. I try emitter, it's faster but winter....