How can I use FilmPack to produce images with a wide color gamut such as Display P3, to take advantage of displays that can display these images, such as the last few generations of Apple products and recent Android phones? For the output format, I only seem to get a choice of JPG or TIFF, and not the profile.
This is not possible, 16Bit AdobeRGB in a TIFF is all you can get.