If your copy of Far Cry 4 on PC doesn't have FOV (Field Of View) options, and you complained about this on a forum, you might want to go and delete your comments. Because there's a very good chance you've just outed yourself as someone who pirated the game.
Ubisoft Montreal creative director Alex Hutchinson says:
PC players! If you're online complaining about the lack of FOV control ... You pirated the game.
— Alex Hutchinson (@BangBangClick) November 18, 2014
Seems the option to adjust the FOV was added as part of an update that came along with the retail release of the game, so anyone who doesn't have it is most likely (a small handful of folks might have bought a disc version and never gone online, but then, how would you be complaining online?) in possession of a pirated copy.
It's not the best means of anti-piracy I've ever seen on PC, but in terms of both frustrating and then outing pirates, it's up there.