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Message: <blockquote data-quote="Kevin Purcell" data-source="post: 1379063" data-attributes="member: 68323">The problem is that you only get three points on the spectrum (RGB) as this isn't a spectrometer it's a camera.The other issue is knowing exactly where and how wide these three "receptors" (color bands) are. I would presume they would have to be fairly close to the average human positions (so the colors map) but being colorblind (RG deutroanomalous ... so my green receptor color max is shifted to the red) I know how this things can differ.That will vary from camera to camera so you have a problem with comparing different results from different users.As a technique as Henry has presented it (for comparisons between bins with the same camera) it is an interesting technique. We just have to send bins to Henry to get them done <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink    ;)" loading="lazy" data-shortname=";)" /></blockquote>