Maybe I misunderstood his paper, but for 3 emulsion papers, such as Ilford MGIV, his Theroy section shows a bump in the grade 00 filter plot, which I see as well, or more accurately, show each of the three emulsions kicking in. The rest are harder to tell where each kicks in (grades 2, 3.5 and 5). In the "Real World" section for 3 emulsion papers, he does show a break in the curve (change in slope or "dip" if you will). The position and degree of the change in slope is where the different emulsions kick in and their additive effect given a specific spectral distribution. So the net effect could "look" like a dip or a bump... I think... my brain hurts thinking about this.
Originally Posted by bernard_L
By the way, thanks for the links you provided. The one one on Memorabilia is quite interesting.
Last edited by jlpape; 03-06-2013 at 03:03 PM. Click to view previous post history.