Re: Colorimetric Accuracy in the Field
Re: Colorimetric Accuracy in the Field
- Subject: Re: Colorimetric Accuracy in the Field
- From: Ben Goren <email@hidden>
- Date: Wed, 05 Jun 2013 08:55:24 -0700
On Jun 5, 2013, at 8:43 AM, Andrew Rodney <email@hidden> wrote:
> On Jun 4, 2013, at 3:45 PM, email@hidden wrote:
>
>> It is not easy to test wether the matrix you have used in your raw
>> converter is accuarte or not with out a lot of meassuring, shooting
>> and comparing values. But you have the rendered image of the
>> colorchecker SG and you can open an save in prophoto and convert back
>> to LAB and compare measurements.
>
> Isn't that what Bruce Fraser did with the Macbeth? Through a very old version of Camera Raw, his output produced the Lab values of the target itself. Yet some here say, colorimetric accuracy with this product isn't possible.
That was with just the 24 patches of a classic ColorChecker.
Try doing the same thing with all 50 patches of a ColorChecker Passport, and then with the few hundred patches of a ColorChecker SG.
If you can do that, I'll go buy a hat so I can eat it.
b&
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