Re: EFI ColorProof XL v2.5+ Linearization
Re: EFI ColorProof XL v2.5+ Linearization
- Subject: Re: EFI ColorProof XL v2.5+ Linearization
- From: Troy Buccini <email@hidden>
- Date: Sun, 2 Oct 2005 21:35:15 -0500
Hi Roger,
Just a quick question. How are you determining your L* of 14? Are you
looking at the black patch in your last measurement of your profile?
If so, you can still get a good black point in your profile. Load
that baseline into a workflow with color-management off and run a
Total Ink Limit chart. I like the one that comes with Colorburst. On
that media you should be able to hit an L* of less than 8 with 100k
and a TIC at 280-330. Now build your profile based on those numbers
and I think you will be happy.
You can also check step 2. Click advance and see if the black channel
is leveling off to early. With just the K channel you should hit at
least an 11-12L*. Hold your curser over the dot in the ramp.
Thanks,
Troy Buccini
On Oct 2, 2005, at 2:20 PM, Roger Breton wrote:
I'm having difficulty reaching into the lower 10 and less Lightness
levels
( L* < 10) using the EFI ColorProof XL linearization routine.
I know I could (and eventually will) post the question into BEST's
own Forum
but I tought I'd ask here, first.
It seems I'm stumbling on a limitation of this RIP where I simply
cannot lay
as much ink as I would like on my choices of inkjet proofing
papers, to
reach into the deep recess of Lab. I tried increasing the
percentages of
Light inks in Solids in "Step1" from the default 5% to 20%, 30% and
50% to
no avail. Actually, this does have some effect on the 400% ink level
Lightness value...but in Step1 only. Because, when I turn to Step2,
the red,
green and blue patches are all flooded; I can't figure why? I also
tried
designating a Reference profile in Step1 but that does not make a
difference
at all in the result.
Currently, on a proofing paper sold here by Fuji, on an Epson9600,
using a
Total Ink Limit of 225% and 20% Light ink in Solid, I cannot get
better than
L* = 14, far too little for adequately proofing SWOP, :((
That problem does not occur with other RIPs I'm using, mind you...
Any ideas are appreciated.
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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