<https://nch.invisionzone.com/topic/38201-old-movies-too-bright-in-center-is-there-a-gradient-brightness-tool-to-compensate/#comment-101009>
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"The image above utilized the Gradient Map in Videopad, which may be about the best one can do.  Play with the effects.\n \n\n\n\tAnd drop by here again;  someone else may have better ideas.\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>