Re: Custom Color Picker for Photoshop from external measurements
Re: Custom Color Picker for Photoshop from external measurements
- Subject: Re: Custom Color Picker for Photoshop from external measurements
- From: Darrian Young <email@hidden>
- Date: Wed, 28 Mar 2001 19:26:57 +0200
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Is there an easy way to import a text file with the Lab, XYZ or LUV values
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AND the corresponding names of the patches, and convert this to a Photoshop
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Color swatch including names and all?
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Is there any way I could make these swatches appear in the custom part of
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the color picker (alongside Pantone, Anpa etc.).
The nicest tool I have seen for this is ColorShop which was bought (or
absorbed, etc) by X-Rite a couple of years ago. The program installs a few
extensions into the system which allows you to call up the different tools
from within the Photoshop color picker when you select Apple Colorpicker
instead of Adobe Colorpicker in the Photoshop preferences. In this way you
can access your pre-created palettes that you measured, imported, or made
manually in Colorshop. There are other tools to mix colors, compare, find
closest Pantones, etc. as well. The important difference that I found using
this application from the Photoshop swatches is that you can name the colors
and search - especialy useful for large databases. We sold quite a few of
these programs awhile back to textile and ceramic tile manufacturing
companies which use personal colors created in their laboratories. It has
been quite a long time since I have looked at this (I think the last copy I
have is 2.5) but maybe an X-Rite dealer can update this info.
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If I found a way of doing this, would the values be converted correctly,
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regardless of which RGB Workingspace I was to use later on, so that I could
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trust that the color would be correct, regardless of whether I use sRGB or
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Wide Gamut (provided that the gamut of the colors is within the working
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space gamut of course)?
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And suppose I for some reason measured the values in say Adobe RGB(1998),
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and entered the values as such, would they still be correct if I changed my
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Workingspace to say ColorMatch RGB? I guess what I'm asking is if the
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swatches palette always output "correct" color regardless of which workspace
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is chosen?
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If this conversion is done the way I hope it is (via the ColorSync engine)
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would these colors be converted using perceptual or a Colorimetric rendering
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intent? I suspect the answer is that it depends on which rendering intent is
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chosen under Color Settings, but I would love to know for sure.
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When you create the palettes, you can do so my measuring, in which case you
have the spectral data, or you can enter lab or RGB (or a couple of others
if I recall correctly) and these values are conserved in the palette. Also,
all values which are no spectrally created are marked. How they are
converted when used in Photoshop I would not like to hazard a guess - a lot
has changed since Photoshop 4 and the old version of ColorShop - once again,
could an X-Rite person step in here?
Regards.
--
Darrian Young
Microgestio Valencia