FORTE
FORTESPEED-POLYGRADE
is a special type of b/w RC enlarging papers of a neutral
black image tone, with the advantage, that through the use of filters its
contrast can continously be varied within the whole range of contrast grades
of conventional enlarging papers (from extrasoft to extra-hard gradation).
Due to this property the utiliser doesn't need to keep
on stock all the different contrast grades of the product, nor special
soft or hard working developers. Another advantage is, that the variation
of the contrast is obtained continously, which is essential at high quality
works, where a contrast between two available grades would be needed.
Spectral sensitivity of Polygrade papers is compatible
with colour heads, so that for a lower contrast the paper is exposed at
an increased yellow filtration, for a higher contrast at an increased magenta
filtration.
Additive filter systems can also be used, where the contrast
varies as a function of the blue and green filter exposures.
Special filter kits for variable contrast papers are
available for con ventional enlargers.
When used without filtration, FORTESPEED-POLYGRADE paper
gives a contrast similar to "Special" contrast grade and has a speed about
double as high as conventional Forte enlarging papers.
Type marking:
|
FGP-1
FGP-2 |
glossy surtace
semimat surface |
Darkroom safelight: dark red filter .
Recommended developer: Fortespeed developer
Recommended fixer: Fortespeed fixer
Drying: air drying or in an RC dryer
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