Conversion Table – Density to Percent Transmission Density – % Transmission (Opacity x % Transmission = 100) Density Opacity %T 0 1.0 100 0.1 1.3 80 0.2 1.6 63 0.3 2.0 50 0.4 2.5 40 0.5 3.2 32 0.6 4.0 25 0.7 5.0 20 0.8 6.3 16 0.9 8.0 13 1.0 10.0 10 1.1 13 8.0 1.2 16 6.3 1.3 20 5.0 1.4 25 4.0 1.5 32 3.2 1.6 40 2.5 1.7 50 2.0 1.8 63 1.6 1.9 80 1.3 2.0 100 1.0 2.1 130 0.80 2.2 160 0.63 2.3 200 0.50 2.4 250 0.40 2.5 320 0.32 2.6 400 0.25 2.7 500 0.20 2.8 630 0.16 2.9 800 0.13 3.0 1000 0.10 D = log 1/T and T = 10-D where D = Density and T = Transmission
