<https://nch.invisionzone.com/topic/38201-old-movies-too-bright-in-center-is-there-a-gradient-brightness-tool-to-compensate/#comment-101017>
<http://schema.org/text>
"The Gradient Map effect is available in version 10.64 running here, but it may not appear in your version.   \n\n\n\tAs you note, it likely won't do what you want.\n \n"
<https://nch.invisionzone.com/topic/38201-old-movies-too-bright-in-center-is-there-a-gradient-brightness-tool-to-compensate/?tab=comments#comment-101011>