I understand what you are trying to say. But what that shows is increasing the distance from that shack. I can increase my FOV in RL by backing up. That is exactly what that slide is doing. Increased FOV would keep the PC at the SAME distance from the shack and just increase the screen. You can call it increasing the FOV. I call it backing up.
He is the same distances from the shack the view of it is different of surrounding areas because it seems smaller due to the increase of FOV.
Skyrim FOV differences same spot never exited the console so couldn't move if I wanted too.
http://steamcommunity.com/id/7656119801561014/screenshot/488877970006572578?tab=public
http://steamcommunity.com/id/7656119801561014/screenshot/488877970006578888/?tab=public
http://steamcommunity.com/id/7656119801561014/screenshot/488877970006577669/?tab=public
http://steamcommunity.com/id/7656119801561014/screenshot/488877970006578061/?tab=public
http://steamcommunity.com/id/7656119801561014/screenshot/488877970006578613/?tab=public
http://steamcommunity.com/id/7656119801561014/screenshot/488877970006579201/?tab=public
http://steamcommunity.com/id/7656119801561014/screenshot/488877970006578310/?tab=public (not supported by Skyrim as you can see)