[argyllcms] Re: Kodak Graycard spectral file
- From: Pascal de Bruijn <pmjdebruijn@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Sun, 10 Jan 2010 21:01:03 +0100
On Sun, Jan 10, 2010 at 8:53 PM, Ben Goren <ben@xxxxxxxxxxxxxxxx> wrote:
> On 2010 Jan 10, at 7:17 AM, Pascal de Bruijn wrote:
>
>> Does anybody have a spectral (.sp) file of a Kodak Graycard?
>
> No, but I've got a Kodak graycard and an i1 Pro. I don't remember how to
> create .sp files, but, if you'd care to enlighten me, I'd be happy to
> oblige....
>
> I've measured it in the past. It's a surprisingly good neutral target. The
> spectrum is quite flat, and the Lab values are all within one unit of 50-0-0.
> All in all, it's the best bang for the buck for gray balancing. It's amply
> ``good enough'' for everything but colorimetric accuracy...and, when you need
> colorimetric accuracy, you need to be using a color-managed workflow in which
> the gray balance is only used for the initial RAW conversion.
Well, Klaus more or less helped me out, but if you still want to
measure your charts, I used chartread -v -s and then pressed s after
reading a spot on the graycard.
Regards,
Pascal de Bruijn
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