bailiff effect in rendering video? ? ?

[Dalo83]

Bye to all,
I'm making videos for my company in order to expose them to this year's ecomondo fair but I'm running into some issues.
I can't understand why making a video comes out with a fog effect that I don't want and that I didn't decide to put.
precise that the plant I have to render has been imported from revit mep in 3dsmax in fbx format

Thank you very much

 

[lattu]

is the first render you do with max or have you already made others? just to understand the knowledge

 

[Dalo83]

Yes, it is the first time but changing to the origin (in revit mep) the weather settings now does not give it any more......
does not exist a way to remove such effect without passing from the mother file of origin?? ? ? ?