[argyllcms] Re: Capture One Profiles
- From: Alex Jamison <a539jamison@xxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Sun, 7 Jul 2013 12:02:41 -0400
Hello Ben and all,
I've been considering making custom patches to supplement the Digital SG chart
in areas where colors are underrepresented, for instance, near neutrals in dark
and middle values, and warm tones in the L 70-90 range where many art papers
fall. If I 'flood the zone' with colors in the areas of special interest that
the resulting profile will give more accurate results in those regions?
Thank you,
Alex Jamison
On Jul 7, 2013, at 10:21 AM, Ben Goren wrote:
>
> Maciej, it's also worth considering making your own chart. Assuming you've
> got a spectrophotometer, all you need is a bunch of artist's paints and a
> printer. Get as many different paints as you can. Golden Fluid Acrylics is a
> good choice if you're buying, or just spend some time in a painter's studio.
> Plan it all out ahead of time. You'll want at least the base paint by itself
> and another patch (or more) mixed with white. Other mixtures aren't a bad
> idea. Figure out how many patches total you'll have, how many painted
> patches, and generate the difference with Argyll. Lay it all out in Photoshop
> (or whatever), print it on whatever paper you've got that has no optical
> brighteners and the largest possible gamut (and glossy is fine, since you
> need to light it in a way that doesn't throw specular reflections even if
> it's a matte target), and paint squares by numbers. Measure with the
> spectrophotometer and you're done.
>
> You could spend as much on paint as you would on a ColorChecker Passport and
> have a chart that far surpasses any you can buy commercially -- and have
> enough paint left over to make many dozens more.
>
> Cheers,
>
> b&
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