[argyllcms] Re: Argyll V1.3.4 released

  • From: Graeme Gill <graeme@xxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Sat, 03 Sep 2011 10:21:58 +1000

Roger Breton wrote:
> To get some idea about how close the filters are to the standard observer, I
> thought one had to measure the whole 380 to 730 spectrum, using a 1nm (or
> not too larger) spectrograph, to break the spectrum into "lines", so that
> one can get the response of the colorimeter at that particular wavelength,

This information is stored in the instrument.

> compute XYZ and graph the resulted "instrument locus" over the Standard
> Observer spectrum locus on a chromaticity diagram?

Hmm. I haven't done this, but apart from an interesting visual comparison,
it wouldn't give a quantifiable measurement. I've certainly overlaid the
instrument curves and standard observer curves (although each instrument
is slightly different).

Graeme Gill.

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