Quote:
Originally Posted by Ole  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. |
The FP4+ curve is quite different with it's steady rise to
a peak in the very red. Ilford's curve is plotted at 2850K.
It is the least 'balanced' of any of several curves I've just
reviewed including Acros 100. May be it is faster in use
than some other 100 to 125 films; skip the use of the
light yellow filter.
Ilford's SFX is interesting with it's extended red sensitivity
but still a fully panchromatic film. Have not considered it
due to it being not so fine a grain film. Likely will add a
few rolls to my next order. Dan