Hi, Some games use vertical FoV, but most use horizontal FoV.
Additionally, those games usually calculate FoV in relation to a certain aspect ratio, usually 16:9 (I do know TF2 does it to 4:3, do not know about any others.)
This means that say, if you set your FoV to 90, then the FoV inside a 16:9 area in the middle of the screen will be 90, and anything outside due to the expansion from 21:9 will be additional horizontal FoV. I'm not really sure how to calculate it, though I reckon that a horizontal setting of 60-70 on 21:9 is about equal to about 80-90 actual horizontal FoV.
|