RE: Colorsync-users Digest, Vol 2, Issue 183
RE: Colorsync-users Digest, Vol 2, Issue 183
- Subject: RE: Colorsync-users Digest, Vol 2, Issue 183
- From: "Mark Rice" <email@hidden>
- Date: Fri, 6 May 2005 12:34:11 -0400
- Organization: Zero One
Except for the fact that the color temperature meter reported what our
eyes saw - and the eye-one contradicted it!
Mark
-----Original Message-----
From: Andrew Rodney [mailto:email@hidden]
Sent: Friday, May 06, 2005 12:08 PM
To: email@hidden; email@hidden;
email@hidden; Steve Upton
Subject: Re: Colorsync-users Digest, Vol 2, Issue 183
On 5/6/05 9:11 AM, "Mark Rice" wrote:
> Bop got his Minolta color meter and measured it, and it confirmed what
> our lying eyes saw: the color temperature rose as the intensity
> dimmed.
I'd toss that piece of equipment out of the loop, especially since you have
a Spectrophotometer! If you have a color meter that reports color
temperature of a light source many light sources that appear different could
read the same, that's kind of a problem! This is one reason why the CIE
defined the Standard Illuminants which are defined spectrally (a certain
amount of energy at each wavelength across the spectrum). This is an exact
and non ambiguous description of color. D65 is an exact color, it is not a
range of colors. The color temperature you got can be a range of colors. It
gave you a correlated color temperature reading. Many colors of white may
correlate to the same blackbody color temperature. Different illuminants can
have the same correlated color temperature.
> I'm not criticising the eye-one - it's just that I have seen so many
> intra instrument disagreements that I take them with a grain of salt.
I'm not saying the Eye-One is perfection but compared to a Minolta color
meter, you're getting vastly different data. The Spectrophotometer is a
vastly superior tool for reporting the color in this case.
Andrew Rodney
www.digitaldog.net
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