I'm struggling with scanning films with a bit dense base like HP5+ and Delta3200 in 35mm format. They print well on normal paper, but the black and shadow tones are compromised, probably because of the dense base. I am playing with the black threshold, contribution of red channel etc., but does anyone have a good idea of what is causing the problem and how you deal with it?(posted 8085 days ago)When I scan APX25 or TMX in 120/220 format, I have absolutely no problem related to the film base density. I use Epson Expression 1600 with its transparency light unit and VueScan program on Linux platform.