i think you mean natural and not normal?
Use bright and brllliant and then do what ever gray scale adjustment you can in via the service menu. the Adv / ISF modes have severe gamma and color decoding issues (despite being able to hit Rec 709 on a 75% stimulus window).
ALSO>>>THIS DISCUSSION SHOULD NOT BE IN THIS AREA. This area is Alphabetically sorted so recent posts do not show up at the top. It is only by chance that I saw this thread.
thanks