Thanks Thomas.

 

Regards

 

Sean

 

From: eci-en-bounces@lists.callassoftware.com [mailto:eci-en-bounces@lists.callassoftware.com] On Behalf Of Thomas Richard
Sent: 17 January 2011 11:22
To: eci-en@lists.callassoftware.com
Subject: Re: [ECI-EN] Tolerance of proofing substrate color

 

Hello,

 

Hi Mauro,

 

The dE can be calculated from dL*, da* & db* as it is the square root of the sum of the squares odd L*, da* & db*.  The formula below shows how.

 

Usingimage001 3.png andimage002.png , two colors in L*a*b*:

image003 2.png

 

You can also use your own program DeltE:

 

http://www.adobe.com/cfusion/marketplace/index.cfm?event=marketplace.offering&marketplaceid=1&offeringid=10244

 

SCNR ;-)

 

 

MfG

 

Thomas Richard

 

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