Re: custom color chart
Re: custom color chart
- Subject: Re: custom color chart
- From: Rick Gordon <email@hidden>
- Date: Thu, 1 Feb 2007 17:00:21 -0800
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
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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
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WWW: http://www.shelterpub.com
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