My recent experience agrees with Joachim. Making ECN-2 developer according to the Kodak formula with CD3 at 4g per liter gives a thinner, lower contrast negative. Haven't tried to print any, yet, but they look like they would scan nicely. So, newcan, it seems that raising the CD3 to 5.2g/l makes a hotter developer that produces a more normal looking contrast? I's guess it increases the dye saturation?