<https://nch.invisionzone.com/topic/38201-old-movies-too-bright-in-center-is-there-a-gradient-brightness-tool-to-compensate/>
<http://schema.org/text>
"I have some recordings from old movies that are too bright in the center. This can be caused by a misaligned condenser lens, and also by the way that the camera making the recording processes the image. The effect is static, so if I could set a variable radial brightness level I could solve the problem. But nowhere can I find a tool that would allow me to do this, and to be honest I am having a difficult time coming up with a search term for center brightness. This is a known problem so I was surprised to find nothing designed to do this. I suppose I could play the movie in PowerPoint and overlay a gray gradient but that would cause a loss of clarity of the image. Anyone have an idea on this? If I were a programmer it seems to me that this would be a straightforward sort of effect. You can see an example of the problem in this screenshot from an old movie. \n \n\n\n\tThanks in advance!\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>