NightVoice : I agree it's a very difficult task to adapt the settings to save time in a general way. So, maybe we should test different types of pictures (for instance pictures with no reflections (blured or not), no transmitted light, ...). An hard work, maybe again to obtain not general results :=) > Bop : interesting. I have not mentioned that reflection was blured in the material of the ground. Seems to have an important effect :=). I keep tuned. Yves