if you want to see more of your skydome .. consider changing your persp focal length like you'd do in real life 😉
a simple standard photo/footage and not a skydome map. keep the skydome eventually just to light the scene.
Ok but ms track are already made, I understood for the shot of the focal length but in the end no matter the size of the sky dome it is the focal length that gives this impression of size, in the end to the rendering the lighting is correct.