For anyone interested, after some experimentation, an inexpensive red filter can be made from the following:
Colour Information and Spectral Charts for LEE Lighting Filters
LEE FILTER #176
I cut circular discs, doubled it up in an SJCAM 4000 (GoPro clone) and had very nice results (until the camera failed).
Large sheet costs about $5.
Colour Information and Spectral Charts for LEE Lighting Filters
LEE FILTER #176
I cut circular discs, doubled it up in an SJCAM 4000 (GoPro clone) and had very nice results (until the camera failed).
Large sheet costs about $5.