how to create a dcp for an artificial light source

[Entropy512 (Andy Dodd)]

@ggbutcher

would do the trick, but that part of X-Rite spun off into a company called Calibrite, which promply added about $90US to the $489 cost of the device when made by X-Rite. Knew I shoulda bought one last year…

Now I REALLY regret not getting one when they were on sale for $100-150 off around 2ish years ago…

[nonophuran]

Hi @Claes,
Back to this topic, I’ve picked my “i1display pro”… now do you think I can get a spectrum chart with it? I have no idea of the software tooling involved. What have you been using for your Spectral emissions from modern light sources (more graphs added) thread? thanks!

[ggbutcher (Glenn Butcher)]

If you want to measure the spectral power distribution of a light, you’ll need a spectrometer. The i1 display pro is a colorimeter, only measures (I think) three regions of the spectrum.

[nonophuran]

thanks for reacting; indeed, I would have been very surprised if such a simple device could output an SPD, but I had not looked it up thoroughly and when @Claes was mentioning the ColorMunki, I thought there was some similarity.

[Claes]

@nonophuran
Glenn is correct: your i1displaypro is a colorimeter,
my ColorMunki is a spectrometer.

Amicalement,
Claes à Lund, La Suède

[ggbutcher (Glenn Butcher)]

The Sparkfun device I posted about here:

how to create a dcp for an artificial light source

Two distinct spectral references for the same card is not good situation, as each represents a different assertion regarding colorimetric accuracy. All you can tell from a comparison of them is how different from each other they are, not that one is more accurate than the other. Getting at accuracy would require re-measuring the card with a spectrophotometer, and comparing those measurements with the respective reference file measurements. Then, throw out the reference file that is furthest (…

would give you 18 channels of spectral data, a coarse SPD…