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 10:04:22 -0700
On Jun 5, 2013, at 9:55 AM, Andrew Rodney <email@hidden> wrote:
> Bruce Fraser's Lab values from the target are based on Lab values supplied by Chris Murphy** which he states in the piece and those values differ a bit from Lindbloom.
But do those values match those of the actual ColorChecker Bruce Fraser photographed?
As I wrote, the quality and consistency of the ColorChecker is commendable, but it *IS* a mass-produced item and differences of a few DE aren't at all uncommon. And those differences can easily become significant with the age and condition of the ColorChecker.
I'll bet you a nice dinner at a restaurant of your choice in the Phoenix metropolitan area that the N9.5 patch on Bruce Fraser's personal ColorChecker is at least a few DE from the L*=96.14 a*=0.00 b*=0.00 he assumed it was.
b&
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