here you go my first mods!
and a happy new year!
I use KingEric's awesome "FreeFlyCam" plug-in. It allows you to tilt the camera in free camera mode (tfc command). He has versions available for Fallout and Skyrim. (Requires Fallout 4 Script Extender)
Download Link: http://enbseries.enbdev.com/forum/viewtopic.php?f=6&t=5386