Trying this with AC. What do I apply for width and screen angle?
Monitor is 21:9, 45" (actually somewhere between 44.5" - 45.9" depending on source), 800r curve.
EDIT: I forgot, there's a wonderful spreadsheet here that's apparently accurate:
FOV from diagonal diagonal screen size,d [inches],57,NOTE:,ONLY CHANGE VALUES IN THE GREEN BOXES! Download sheet to edit aspect ratio,r [-],21,NOTE:,This calculator compares the FOV for a single flat monitor and curved monitor of same size. 9 Curvature,R [mm],1000,NOTE:,This calculator assumes t...
docs.google.com
To use it, click File -> Download.
Type in your diagonal screen size, aspect ratio, curve, and distance from eyes to screen. It will tell you the correct v.FOV and give you two h.FOV, the h.FOV you'd get if your screen had no curve and the h.FOV for the curve you entered.
It also gives other info which may come in handy like the screen's "curved width" (arc length), height, and "straight width".
On my 45" 21:9 800R curve, with me sitting 55 cm away, the FOV is vertical: 45, horizontal: 87. However, because of the curve, I should actually be getting 104 degrees h.FOV (for the same 45 degrees v.FOV). This means I'm getting cheated out and loosing 17 degrees of h.FOV when using a 1:1 FOV setup (45 degrees v.FOV).
NOTE: The above is regarding FOV compensating for curved monitors. It's not about FOV & distortion - regardless of curve or no curve - the wider a monitor is (eg. 32:9). It seems we're talking about 2 different things here, although these 2 subjects may overlap.