Dan, take a look at the sensitivity curves for Ilford FP4+.
It has reduced blue sensitivity compared to most other films.
A "blue de-sensitizer" is easy: Yellow dye. I don't know if that's what Ilford uses, but I like the colour response of FP4+ better than other films I've tried for most outdoors work.
__________________
-- Ole Tjugen, Luddite Elitist
Norway |