Digital BW, The Print

Johnny,

It took me a while to figure out the madness.  Using your C=1.13 as 
an example:  Go to the 21 steps of the black ink, and find which step 
gives you d=1.13.  You may not find an exact match; you may find that 
on the black ink steps X%=1.00 and X+5% is 1.2.  That means the true 
value is somewhete in between.  Using the above as an example, it is 
closer to x+5%, so I would type in X+4% as a SWAG.  It does not have 
to be absolutely accurate.  You will be linearizing the whole mess 
later on anyway.  This step just determines the amount and location 
of overlap of adjacent density inks.

Hope this helps.

Shilesh

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Johnny Eades" 
<jeades1@s...> wrote:
> 
> I finally got a densitometer and am in the process of creating my 
> first paper curve for Epson Heavyweight Matte paper(Neutral curve) 
> and MIS UT2 inks and an Epson 1280 printer. 
> 
> I have charecterized the inks and found the black maxed out at 60% 
> ink when printed at 100% ink in the first pass. I am now at the 
stage 
> of just after printing the second calibration chart at that 60% and 
> have read the ink densities of each ink position. The results are:
> 
> K=1.56
> C=1.13
> M=1.09
> Y=not used
> LC=.96
> LM=.97
> 
> From the help file "This process is repeated for each lighter ink, 
> comparing it to the next darker ink, calculating its density 
relative 
> to that ink and then converting it to a density relative to the 
> darkest ink. Record these values in the appropriate ink density 
box." 
> 
> This is where my logic fails me. In the curve creator how do I 
> determine what density percentages to enter? I know there are many 
> who have created these curves, so could someone fill in the missing 
> information for me after telling me the method of determining the 
> density percentages? I would really appreciate all help from 
soneone 
> who has surmounted this step. 
> 
> Your friend in Photography,
> 
> Johnny