Re: Eye-One Pro and Profilemaker 4 Emissive Meaurement Errors (PC Platform)
Re: Eye-One Pro and Profilemaker 4 Emissive Meaurement Errors (PC Platform)
- Subject: Re: Eye-One Pro and Profilemaker 4 Emissive Meaurement Errors (PC Platform)
- From: "John Hollenberg" <email@hidden>
- Date: Sun, 24 Nov 2002 12:27:03 -0800
- Priority: Normal
On Sun, 24 Nov 2002 11:50:04 -0800, bruce fraser wrote:
>
>>The EyeOne measures D50 Lab.
>
>>
>
>>If you convert your measurements to D65, I suspect you'll get a* and
>
>>b* values pretty close to zero.
>
>
>
>How do I do this conversion? Is it available in the software?
>
>Thanks for the help.
>
>
I don't think there's anything in the EyeOne software that will let
>
you do the conversion, but Bruce Lindbloom almost certainly has a
>
calculator at www.brucelindbloom.com that will...
Great resource! The a and b values after conversion to D65 were
very close to 0. Average delta a was .46, average delta b was .32.
Thanks for clearing this up!
My only other question would be about the luminosity values and
why they are off. I ran into something similar when I got a profile
made for my Nikon LS4000 and it turned out to be related to using
absolute or perceptual rendering intent.
--John
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