drive fov by focal length for physical camera

Author: inwoods

Assets/com.unity.formats.fbx/Editor/Scripts/FbxExporter.cs

@@ -1395,7 +1395,6 @@ protected FbxCamera ConfigurePhysicalCamera (FbxCamera fbxCamera, Camera uniCame
                 fbxCamera.FilmAspectRatio.Set(aspectRatio);
                 fbxCamera.SetApertureWidth (apertureWidthInInches);
                 fbxCamera.SetApertureHeight (apertureHeightInInches);
-                fbxCamera.SetApertureMode (FbxCamera.EApertureMode.eFocalLength); 
 
                 // Fit the resolution gate horizontally within the film gate.
                 fbxCamera.GateFit.Set(FbxCamera.EGateFit.eFitHorizontal);
@@ -1407,13 +1406,11 @@ protected FbxCamera ConfigurePhysicalCamera (FbxCamera fbxCamera, Camera uniCame
                 fbxCamera.FilmOffsetY.Set(uniCamera.lensShift.y);
 
                 // Focal Length
-                double focalLength = uniCamera.focalLength;
+                fbxCamera.SetApertureMode (FbxCamera.EApertureMode.eFocalLength); 
 
+                double focalLength = (double)uniCamera.focalLength;
                 fbxCamera.FocalLength.Set(focalLength); /* in millimeters */
 
-                // Field of View
-                fbxCamera.FieldOfView.Set (uniCamera.fieldOfView); /* in degrees */
-
                 // NearPlane
                 fbxCamera.SetNearPlane (uniCamera.nearClipPlane.Meters().ToCentimeters());