also, its worth mentioning, EZCA or any camera addons might be useful for machinima, and movie like effects, but for piloting, its terrible.
in real life, your plane might shake, accelerate, turn, climb, do whatever, you still can point your eyes to a direction, even if your head shakes like crazy. and unless during a turbulence, you can still manage to easily reach a knob with your hand. with the camera movements, you cant.
even the slightest effects suck, when you use your mouse to dial a frequency number, or turn switches in VC that you didnt assign to a joystick button. its even worse than the momentum effect, where you adjust your screen to a good zoom level that you can see everything you need, and then when you accelerate a little bit, you gotta readjust cuz everything turns small. folks, real life has no zoom levels, and humans have panoramic view. fsx runs in a flat monitor, idk how such camera effects can improve the pilots experience. if you want to add movie effects to fsx, then develope it and label as such. this isnt increased realism as devs claim, if you want to do so, make a ejection seat connected to your computer, that shakes accordingly, or something like that.
you know, in fact i had to quit using facetracknoIR becase it wouldt smooth head movements properly. i wanted to keep the camera standing still while my head was static, but it only has deadzones for the center point. lets say i want to look at the right console and start turning knobs and switches with my mouse, for a startup procedure. well, i just cant. camera shakes, and even when it shakes slightly, a pixel is a lot when you're talking computers. i needed it to FREEZE. the smooth filters in the program are even worse. if you increase the smooth treshold, it decreases movement speed with it. if you set smooth to full, in game, when you move your head to certain direction, it will take 100 times more for the camera to reach the position. simply there isnt such a position where you can move your head with a great response, and manage to keep your sight freezed to a certain point later. i never used trackIR, mainly because its expensive as shit for a lame sensor that i might end up shelving, but its probably not much different.
my combination? hat switch for panning + quick button for centering camera in your preferred position.
anyways, just sharing my frustrations