OptionalaspectViewport width ÷ height. Default 1.
OptionalfarFar plane distance. Default 1000.
OptionalfieldFull vertical field of view in radians (§7a — there is no degree
overload). Default Math.PI / 3 (60°).
OptionalnearNear plane distance. Default 0.1.
Construction options for PerspectiveCamera (§47, §97).