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<p>[QUOTE=&quot;-jeffB, post: 2907763, member: 27832&quot;]I&#039;ve looked at too many spectrograms to let that one go by. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie11" alt=":rolleyes:" unselectable="on" unselectable="on" /></p><p><br /></p><p>I can describe colors perfectly well to a blind person, in terms of intensity at a set of wavelengths. No, they won&#039;t have the same mental representation of those colors as a sighted person -- but do we really want to go down <i>that</i> rabbit-hole, even among a group of sighted people?</p><p><br /></p><p>As for showing pictures, that&#039;s a lost cause as well. We&#039;ve all seen photos where the white balance was clearly off, so that gold or copper looks silvery, or silver looks blue or red. Beyond that, you have no idea how my monitor is set up -- if it&#039;s close to bedtime, <i>all</i> your pictures will look yellow or orange to me, because I&#039;ll have the blue on my monitor cranked down to almost nothing.</p><p><br /></p><p>Even if you&#039;re looking with your own eyes at something held in your own hand, your perception of its color depends on the lighting and your surroundings.</p><p><br /></p><p>But we spend most of our lives working in the realm of &quot;common sense&quot;, not precise measurements. TPGs use standardized lighting, and (presumably) standardized comparison pieces. TPG customers learn how the TPGs categorize colors, and learn to judge (or guess) which pieces will or won&#039;t make the cut. I don&#039;t think spectrometers ever come into play, although they would if <i>I</i> ran things. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie2" alt=";)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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