Changing the center of the vignetting tool in Apple Photos does not appear to be possible. The available settings are: Strength, Radius, Softness.


Although I do not have any personal experience with the program, MetaImage seems to be what you are looking for. From their website: Metalmage for impeccable metadata MetaImage is the only macOS tool that allows to edit, read, and write metadata while working with all types of tag formats. Navigating through a sleek interface, you can change everything ...


To reframe you question, you need to understand what Photos really is. It is essentially 3 things : previews you can look at on the screen your originals sorted somewhere (including EXIF information, related to the shooting, and possibleIPTC information, vulgarly referred to as "metadata" ) a database to handle the previews The database does not ...

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