I have recently run two separate tests on the contrast ranges of Arista II VC RC glossy paper. Using a Stouffer's 21 step negative I printed sheets for all of my Kodak Filters from #-1 to 5+. My enlarger is an Omega DII with a 150W bulb. The sheets were developed in Dektol 1:1 for 1 minute. I have discovered that there is no variation in contrast for the filters #1-#2, and then #2.5-#3 are the
same. So from #1-#3 give very little over all contrast increase. I counted the steps through solid black to solid white and here are the results.
#-1 : 14 steps #0: 13 steps #0.5: 12 steps #1: 11 steps #1.5 11 steps
#2: 11 steps #2.5: 10 steps #3: 10 steps #3.5: 9 #4: 9 steps
#4.5: 8 steps #5: 7 steps
I should add that these were selenium toned 3 minutes in a 1:7 dilution.
My questions are;
Should I expect a greater variation range over all? Also should the middle ranges #1 - #3 give me more variation? Any information will be appreciated.
John