determining optimum dot gain
determining optimum dot gain
- Subject: determining optimum dot gain
- From: Rich Apollo <email@hidden>
- Date: Wed, 24 Nov 2004 07:42:12 -0600
On Nov 23, 2004, at 9:41 PM, email@hidden
wrote:
Can anyone provide a more scientific way (without making my head
explode from too much color theory) for setting up an optimum dot
gain curve?
Mark,
Just run some scales/ramps on the device you want to match and the DI
press. Measure the dot values of each. Then apply the difference to the
output of your DI. I personally like to handle each channel separately.
Others like to handle CMY together and K separately. Don Hutcheson used
to have a very nice spreadsheet for this. You could check his web site:
hutchcolor.com. I know the target is still there to be downloaded. It's
the Tone_tgt6.lzw.
If you're not trying to match a particular device then you could try to
hit GRACoL guidlines for Density, Dot Gain and Print Contrast. GRACoL's
published chart contains specs for SWOP as well.
I've got some simple ramps built that I'd share if it'd save you some
time. Just let me know.
Rich Apollo
Priority Litho
314-344-1144
email@hidden
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