>>4279092hahahahaha that's a good one. FR tho?
i actually taped the infrared hoya filter over a piece of cardboard with a circle the size of the filter cut out and put that over the flash - i know ghetto.
they have these too which i plan on getting
https://store.camtraptions.com/products/infrared-flash-filters?variant=32285347086419i've also heard that you can use a regular dark read gel filter, but you would have to use several layers.
photo was taken with the hoya filter over the flash
look up Kohei Yoshiyuki and Weegees infrared photos! they might inspire you to give it a shot c: