Getting much wider is a matter of including more of the environment, since you really can not move the people out of the center square of the 24mm (16mm) field of view. 8mm (12mm equivalent) or 11mm (a hair wider than 16mm equivalent) will not let you get more people in unless you are willing to let them get pretty weird-looking; it is only non-special-effect use would be to capture the environment as w