The twelve MULTIGRADE filters are numbered 00–5 in 1/2 steps, with the lowest filter number corresponding to the softest contrast.
Filters are available in sets of filters 8.9x8.9cm (31/2x31/2 inches) and 15.2x15.2cm (6x6 inches). They can be used above or below the lens and can be cut to fit the enlarger filter drawer.
MULTIGRADE filters are very easy to use: no complicated calculations are needed when changing from one filter to another. The exposure time for filters 00–31/2 is the same; that for filters 4–5 is double.
Buoni d'acquisto
Polaroid
SolarFast