P:Lens Blur Brush Refinement Sample Amount

In the Lens Blur Panel, add an eye dropper for the refine brush so a user can sample a part of the image that has already been blurred and match the amount slider to that area.

That way it will make it quicker to dial in areas that the ai has mis-identified or the user wants to have slightly more blur to without a lot of fussing with the amount and the flow.