A simple binding to toggle the field of view. This will change the field of view when pressed, but will zoom out cutscenes, break sniper scopes, and disable zooming in when aiming.
%USERPROFILE%\Documents\My Games\BIA Hells Highway\SumacGame\Config\SumacInput.ini
Changing the action of the in-game "zoom hold" bind to change the field of view. The field of view will lower when aiming to zoom in, then zoom out to your desired standard fov on release. This will also zoom out cutscenes and break sniper scopes. Recommend a zoom fov of 60, and a standard fov of 100.
Actions=(Id=IA_ZoomHold,Alias=".ZOOMHOLD",Names=("Zoom"),Command="ZoomIn | FOV 60 | OnRelease ZoomOut | OnRelease FOV 100")
Creating a bind similar to the bind shown in method 1 set to "fov 63" and pressing it during cutscenes will set the camera close to what it should look like normally.