Re: Follow up with your Colorsync list question
Re: Follow up with your Colorsync list question
- Subject: Re: Follow up with your Colorsync list question
- From: Thomas Holm/pixl <email@hidden>
- Date: Fri, 25 Sep 2009 14:42:42 +0200
I'd guestimate the problem to be that the colors on different objects
when built from separate tints, but when you multiply they are made
into one in the PDF.
Alwan handles color on a per object basis and thus handles each tint
in it's own right.
A way around this (tint 2 problem) is to flatten the file, which would
work in your case, but it may not be advantageous in other cases, see
below.
Let's take another example where you have a CMYK 0,100,100,0 with a
black overprint of 100. And you want to reduce TAC to 240% for
newsprint.
The only way to honor this would be to flatten the file and reduce CMY
so you end up with, say, 0,70,70,100.
If you have registration issues on press this likely won't be a good
solution though, but for this you are stuck between a rock and a hard
place.
Or in other words: If it's a graphic you need to do it, if it's text
it's probably a bad idea to flatten.
So the right solution depends on who you are, what you receive and
what you need to end up with.
There isn't a single perfect solution for everyone and every workflow.
Best Regards
Thomas Holm / Pixl Aps
- Colour Management Consultant
- Seminars speaker and tutor on CM and Digital Imaging etc.
- Ugra Certified Expert/Consultant: Process Standard Offset
- Apple Solutions Expert
- Member, ColorManagementGroup.com
- www.pixl.dk ยท email@hidden
--
On 24/09/2009, at 17.59, Matt Louis wrote:
Terry & Steve.
I have CMYK Optimizer so I'll share an example:
Optimizer settings:
Source & destination = Gracol (optimize always)
Relative colormteric w bpc
All purities off (not preserved)
TAC = 320
Input file:
[c,m,y,k]
tint1: 100,100,100,100 (L*8)
tint2: 0,0,0,100; set to overprint tint1
tint3: 0,0,0,100; set to multiply tint 1
Alwan Output:
tint1 tac: 320 (L*8)
tint2 tac: 363 (L*8)
tint3 tac: 320 (L*8)
Tint2 has surpassed 320.
Matt Louis
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