Hi BB

Thanks for reply,really appreciated.

I usually using 25mm or 35mm,75mm focal length I've not used for while,unless I'm doing something like Portrait

And thanks for clarifying about the using single sided primitive,this has been mine misconception or misunderstanding about the using of EnvSphere as background and for lighting too...

On first render I've used 2k probe and tried to use too spherical map(this has have above 4k),but with same results with blurry render... 

What is good size for probe or spherical map if I can ask?

In 3ds max those probes or spherical maps working fine and never have issue with them..

Again thanks for reply,really appreciated

Thanks,Jura