Thank you both for your comments.
I've tried the FoV as far as the 120º that it allows.
It looks as if rooms have more area with FoV at 75º, 90º, 100º and 120º but there's still something strange with the aspect ratio.
Maybe this is just a feeling but even my wife asked me "what's, is this our living room??".
But next time I'll try to capture some photos and post them here.
Cheers