Re: Colorimeter vs. spectrophotometer in display profiling
Re: Colorimeter vs. spectrophotometer in display profiling
- Subject: Re: Colorimeter vs. spectrophotometer in display profiling
- From: Graeme Gill <email@hidden>
- Date: Tue, 30 Sep 2008 10:21:05 +1000
Marco Ugolini wrote:
I detect a discrepancy between the two statements: Graeme says that "colorimeters don't
split things up into bands", while Eric says that "the colorimeter has only several
bands". Eric and Graeme are both far more knowledgeable than I am, but both statements
cannot be true, unless I am misinterpreting either one or both. So...which is which?
There's no discrepancy. I'm using "bands" in a stricter sense. Typically a spectrometer
will break the light into narrow, well defined, separate, uniform spectral bands,
each one having a central wavelength and and a half level width.
Eric is using "bands" in a looser sense, indicating that the XYZ weighting
filters have their peaks at different wavelengths, and can therefore
be regarded as 3 (rather poorly separated and overlapping) "bands".
What exactly does that mean (i.e., "well-characterized")?
Measured and repeatable.
Graeme Gill.
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