Cool, the FOV definitely looks better with those tweaks. With how it was originally, are we sure this game isn't -vert?
In games that have user-customizable fields of view, especially in games like Black Shark where you can assign control of the view zoom level to keystrokes, an analogue axis, or to TrackIR control, the concept of Vert- really doesn't apply. Youy can zoom in or out as far as you want (until your hardware chokes oin the huge scene it has to render). The only time the concept of Vert- would apply to a title with this sort of view control is when the game doesn't allow the user to zoom out far enough, which was the problem in the Lock On and Flaming Cliffs titles (precursors to Black Shark).
And to clarify, since it's not pointed out in this thread: the "3 camera" option for Black Shark is intended to be used with a home cockpit setup comprising three screens at 90-degree angles. The left and right screens show the view when looking out the sides of the cockpit. If you have a home cockpit or similar setup this can be very immersive.
Black Shark has some really neat display options, especially the options to place instruments/maps/targeting displays on second and/or third monitors. While these certainly look good placed right next to your center monitor, it also allows for home cockpit builders to integrate these displays into a cockpit setup, locating them in a proper position relative to the view out the front.