Re: Eye-One factory recalibration and Xrite Support
Re: Eye-One factory recalibration and Xrite Support
- Subject: Re: Eye-One factory recalibration and Xrite Support
- From: Marco Ugolini <email@hidden>
- Date: Sat, 19 Jul 2008 15:02:28 -0700
- Thread-topic: Eye-One factory recalibration and Xrite Support
In a message dated 7/9/08 7:16 PM, Todd Shirley wrote:
> If you are getting 4dE difference between your eye-one and Isis,
> something is definitely off. Are you definitely using the same UV
> filtration on both? If you are taking both readings with UV included,
> and your stock has a lot of optical brighteners, that might increase
> the dE between the 2 devices. I don't know if others have experienced
> this, but I've found that the Isis only "sees" optical brighteners as
> making the paper bluer, not brighter. So the difference between UVcut
> and UVin on the Isis can be up to 7 for the b value but no difference
> for the L value. My UVcut eye-one is about 1.5 dE different for paper
> white when compared to the UVcut Isis, but when I've used a UVin eye-
> one and compared it to the UVin measurements from the Isis my
> difference can range from 2 to 5, depending on the amount of OB. Eye-
> ones "see" optical brighteners as increasing the L value as well as
> decreasing the b value.
Very interesting, Todd.
May that be due to the presence of an LED light source in the iSis as
opposed to what I believe is incandescent tungsten in the EyeOne Pro?
Marco Ugolini
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