Re: Radically different readings from X-Rite 530 and 939 on yellow ink
Re: Radically different readings from X-Rite 530 and 939 on yellow ink
- Subject: Re: Radically different readings from X-Rite 530 and 939 on yellow ink
- From: Martin Diers <email@hidden>
- Date: Wed, 23 Dec 2009 10:03:24 -0600
The "retailer" finally discovered that their instruments had been set to
DeltaE-LAB (same thing as DeltaE 76). We are working with them now to
hopefully get this corrected. I have to think that this is an oversight
on their part, because they told us to use DE94.
Thank you for your help.
On 12/22/09 5:49 PM, Klaus Karcher wrote:
>
> Do you use the same color difference formula?
>
> More recent color difference formulas like Delta E 94 or Delta E 2000
> give much smaller figures in saturated yellows and correlate much
> better with the perceived color difference than Delta E 76.
>
> e.g.:
>
> LAB1: 90 0 85
> LAB2: 90 0 98
>
> DE76: 13
> DE94: 2.69
> DE00: 2.54
>
> Klaus
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