Quote Originally Posted by Sal Santamaura View Post
What makes a change in contrast index (CI) "better?" Why would an increase or decrease be an improvement? Wouldn't either simply require changing development time so the target CI for one's printing method is retained?
In my case the change in slope of the linear portion of the curve makes it easier to match my paper of choice, grade 2 Azo. It therefore means that I can make my ever dwindling cache of precious grade 3 Azo last a lot longer. So for me it represents a dramatic and much appreciated improvement.

However, I think your point is well taken. If I weren't exclusively a contact printer, I would find the higher CI more difficult to control and therefore no improvement at all; in fact, quite the contrary.