[argyllcms] Re: Spectral to sRGB
- From: Pascal de Bruijn <pmjdebruijn@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Tue, 12 Oct 2010 12:13:43 +0200
On Tue, Oct 12, 2010 at 12:07 PM, Pascal de Bruijn
<pmjdebruijn@xxxxxxxxx> wrote:
> On Tue, Oct 12, 2010 at 12:01 PM, Sam Berry <samkberry@xxxxxxxxxxxxxx> wrote:
>> I would think, if you are just after the numbers, that remeasuring with
>> spotread (which should give you more instantly usable numbers) may be the
>> easiest way if you still have the object to measure.
>> Spotread will give you numbers relative to 100% reflectance.You can set a
>> paper white as a reference in spotread too, which may give you a result you
>> prefer. Not sure of an easy, non-bodged way to do it from an .sp file....
>
> Result is XYZ: 29.960414 19.359126 7.067359, D50 Lab: 51.104747
> 49.415136 27.528969
>
> That will translate to
>
> 29.960414 19.359126 7.067359 [XYZ] -> MatrixFwd -> 202.089327
> 79.937153 78.189606 [RGB]
>
> Which seems like a pastel to me on screen, which it isn't on paper...
The silly thing is, I _think_ I found the official specification for
the color in sRGB, which should be 204/51/51 (this seems to match
visually quite well too)...
Any clue where this discrepancy might arise from?
Regards,
Pascal de Bruijn
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