I am looking for suggestions for solving what I believe is a light reflection off my Fidelity Elite film holder onto the film when using wide angle lenses (please see photos below). When shooting an image with a strong out of frame light source occasionally I will get a highlight on the film. I know that more accurate placement of a hood or french flag would help this, but I am also considering painting the edge of the film holder with an ultra matt black paint to help as well, such as black 2.0. I am wondering if anyone has tried this before, or has a suggestion for something I may be missing. Thank you.

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