Ultrafine Varigrade Filters 3.5" x 3.5" Set of 12

A complete set of 12 Ultrafine Multigrade Variable Contrast filters in 3 1/2 inch by 3 1/2 inch size packaged by Ultrafineonline. For use as Ilford Multigrade filters for printing Ilford Multigrade and like brands of papers on unconverted black-and-white enlargers, Photo Warehouse has produced complete sets of filters for all contrast grades in half grade steps. Multigrade filters are supplied in 3 1/2 inch by 3 1/2 inch square sizes to fit most enlarger's filter drawers, and as a set of mounted filters for below-lens use with a filter holder. Multigrade filters do not require any recalculation of exposure times when changing between grades 0 and 3, grades 4 to 5 simply requiring twice the exposure. Provides simple contrast control. Compatible with all Multigrade/Variable Contrast papers currently available. Twelve Multigrade Filters numbered 00 to 5 in 1/2 steps To fit the enlarger filter drawer Very easy to use Exposure time for filters 00 to 3 1/2 is the same Exposure time for filters 4 to 5 is double Dimensions: 3 1/2 x 3 1/2 in. (8.9 x 8.9cm)