The screenshots in this page are not edited except for clipping and resizing. The originals were too big for a website (3840x960 taken on a Triple Head system) so I clipped smaller sections from them, but even those were too big, so I resized clippings to 1024px width keeping the same proportion.
The resulting screenshots show a field of vision that is probably over 110 degrees, which is a fraction of the Triple Head FoV (up to 270 deg., default 210) but wider than you would get on a regular one-monitor setup (up to 90 deg., default 70).
For a realistic representation of what you would see on your signe monitor game screen, cut out about 1/3 of the screenshots' width.

System specs and settings used for these screenshots are available here