Re: custom color chart
Re: custom color chart
- Subject: Re: custom color chart
- From: Derek Lambert <email@hidden>
- Date: Fri, 2 Feb 2007 10:00:15 -0500
I had issues posting to the list since November last year. The post
about custom color chart was posted by my wife from her yahoo
account. I tried 3 different email accounts and it did not get
through before.
Anyway, now that it is working. Steve is right. I will have to pare
it down. The reason for my custom chart is exactly what Rick guessed.
I have a brand new gmg system and I was happy with my proofs matching
My Fuji FinalProof till I ran some job with neutrals in highlight. My
gmg proof was too warm. I need to make it ,match closer. I tried
Profilemaker and it does NOT work. You just cannot type your own
color values you want to use. Same in ColorPort unless you ad custom
- but this will awful amount of time. I am looking at some
automation. The worst I would open ECI or IT8 and add more values to
them.
I did not look at BabelColor PatchTool. Does it allow you to pick
your own color values, or it will generate it's own?
Derek Lambert
On Feb 1, 2007, at 8:00 PM, Rick Gordon wrote:
In terms of focusing the paring process, what areas tend to be
under-represented most of the standard charts? It would seem the
near-blacks, near-neutrals, and near-whites are three areas that I
often find that profile performance is likely to suffer in. And if
they are over-targeted in relation to the whole, what areas are
likely to suffer the most from under-representation? Gamut limits
in the primary and secondary colors? Or...?
Thanks,
Rick Gordon
------------------
On 2/1/07 at 3:24 PM -0800, Steve Upton wrote in a message entitled
"Re: custom color chart":
At 5:54 PM -0800 1/31/07, A L wrote:
I need to create custom color chart to profile my Epson 9800 with
color values from 0 to 100 for C,M,Y every 5% with K values
0,5,15,25,50,65,75,85 and 100. Random is better but Visual is
fine. I have tried ProfileMaker and ColorPort without any luck. I
don't want to kill myself in Excel. Does anyone knows how to do it?
If you describe what you need in more detail then it shouldn't be
too tough to whip one up. Ultimately you're just talking about
some iterations in a programming or scripting tool but how many
patches do you really want?
If you do just the CMY values you mentioned above you're looking at:
21 steps for 3 channels = 21x21x21 = 9261 patches...
(for perspective the ECI/IT8.4 targets do 9-steps = 729 patches,
then add black to smaller CMY sets)
Then if you do each of these groups with each of the K values you
mentioned then you're looking at:
9261 x 9 = 83,349 patches....
you might want to pare that down a bit....
--
___________________________________________________
RICK GORDON
EMERALD VALLEY GRAPHICS AND CONSULTING
___________________________________________________
WWW: http://www.shelterpub.com
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