Table for ND filter set. Made up from only 3 gels. Half stop gels are sold by LEE. Can do 21 stop wedge strips then. filter # stop # gels inframe # gels inframe # gels inframe OpticalDensity %Trans’ ND0.3 ND0.6 ND0.9 1 1 1 0.3 50 2 2 1 0.6 20 3 3 1 0.9 12.5 4 4 1 … Continue reading Sensitometry / Densitometry Fun