Hello. Thanks for reply. Never mind. A just watched videos again and I was know I see. For example this part
is about to reduce noise... Then
is for different purposes. I understand it know.
I'm currently working on personal project, weekend house which is actually in build progress (realizing) right now. House have cellar under ground. Sauna, vine room etc. And no WINDOWS. So I - as beginner trying to figure out how to make renders at least watchable ( means not make you cry) pictures hehehe.