Ah I gotcha thank you, my mouse for instance has preset dpi levels 400, 800,1600,3200, so I was trying to find a way to make the turn speed similar despite fov which can be a pain. Iwas multiplying my sens by 1.732 by using tan(120/2)/tan(90/2) since one game I use 90 and I like the tun speed but on 120 fov it feels super slow, idk if the JT method helps with that or something else.