Ilford Multigrade Filters provide contrast grade steps from #00 to #5 in equally spaced half-step increments. Use to vary the contrast with any Multigrade paper for better print quality and without having to stock paper in several contrast grades. Since Multigrade Filters are speed-matched, the same exposure can be used when printing with any filter from #00 to #3-1/2 without having to waste time and paper by making test prints. Filters #4 to #5 require 1 f-stop more exposure, an easy compensation to make. Multigrade Filters are available in 6x6" sheets for use above the negative carrier, in your enlargers filter drawer and can be easily trimmed with scissors to fit smaller filter holders.