Digital BW, The Print

Hi Nick,

I see that Lou already provided a fairly detailed answer, but I'll toss in a 
thought or two...well, too!

Did you build your initial EEM profile from the one that was delivered with 
the software? I'm assuming that any discussion regarding profiles is 
applicable to both Mac and Windows platforms. I'm using the newly release 
Windows version so my comments are based on that.

I received three different "neutral" starter profiles for EEM. I believe 
each had the black ink limit set to 22. My Epson 2200 with standard UC inks 
demanded 23 or 24--can't remember the exact number cuz I worked on 4 
profiles, yesterday--to reach dMax. This is evaluated by selecting "Target 
Patches" off the "Print Targets" button. Did you print these patches and 
evaluate after drying (I tossed mine in the microwave for 10 secs on high)? 
As Lou said, one has to be very careful with ink limits; too little and, of 
course, you won't achieve dMax. However, too much is not good, either, 
because you'll actually reduce dMax. Therefore, it's bad procedure to 
arbitrarily bump the black ink limit to 26. You could be doing more harm 
than good. If you haven't done this already, take a look at the usage of 
other inks and where the curves start/stop, too.

Good luck,
Alan Huntley

----- Original Message ----- 
From: "Nick Nugent" <nick_h_nugent@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Sunday, January 30, 2005 11:54 AM
Subject: [Digital BW] IJC/OPM and dmax issue



Hello IJC/OPM users,

I was initially very thrilled at the ability to create quad tone profiles 
very quickly using IJC but after printing one of my favorite image for 
comparision with one using the IJC profile and one using Paul Roark's curve 
for MIS UT-FS for EEM paper I noticed that the one using Paul's curve is 
significantly more brilliant.

It's not the the IJC/OPM image is flat, it's very nicely rendered. Smooth 
gradients with good details in both shadow and highlights. But measurements 
of darkest patches show the one printed using Paul's curve has the expected 
high DMax of 1.67 or somewhere about there. The one rendered by OPM yields 
about 1.59. This is enough to show the first one has significantly more 
punch when they are placed side by side.

Can someone explain?

I played with IJC to push maximum ink limit, increase the black ink setting, 
cut off the medium gray earlier, force maximum overlap, etc. but there are 
no changes. The maximum dmax remained the same.

Thanks,
--nick


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