for sucking continous tones out of a high contrast film I think you are on the right track with technidol type concoctions. I know the fellas who use rodinal with techpan work with crazy dilutions upwards around 1/150... I think you are close but I just bet you'll find it isn't cheap for the results you are after unless rodinal works to your satisfaction. Good luck and buy some opaqueing goop...(posted 8906 days ago)