I find a algorithm to calculate zoom from fov,it works fine with
PerspectiveLens,But with OrthogonalLens it shows smaller than Max.
Anybody know what's happening?
Here is the getZoom code:
                private function getZoom(fov:Number):Number
{
var fov2:Number = (fov/2) * (Math.PI/180);
var tan:Number = Math.tan(fov2);
return 550/(2*tan*_view3D.camera.focus);//550 is view width
}

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