michael hurd
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Here's a good read on CRI and spectral power distribution, albeit for home A19 replacement bulbs in incandescent, LED, compact fluorescent.
Some real graphs as well. Post #13 has an overlaid graph of different types.
http://www.candlepowerforums.com/vb...ent-v-Compact-Fluorescent-v-LED-Pop-Mechanics
http://www.candlepowerforums.com/vb...ent-v-Compact-Fluorescent-v-LED-Pop-Mechanics
Note: automotive white LED's are a lot more blue, with less red output ( different phosphor blends )
RGB LEDs aren't really white, and serve as an extreme example of 'spiky spectral power distribution.' Any frequencies outside each LEDs narrow output range are absent. This leads to some colors "working" and others not. I have a printer whose pages are black under one RGB light and colored under another. Why? Because the ink isn't the right color. This effect to a lesser extent leads to creepy appearances under spiky sources.
In automotive painting, color matching should be done outdoors in direct sunlight, or using a specially designed light source inside, when no natural light is present.
If I want a vehicle color to stand out under fluorescent lamp or mercury vapor street lighting, it will always be a blue.
Some real graphs as well. Post #13 has an overlaid graph of different types.
http://www.candlepowerforums.com/vb...ent-v-Compact-Fluorescent-v-LED-Pop-Mechanics
http://www.candlepowerforums.com/vb...ent-v-Compact-Fluorescent-v-LED-Pop-Mechanics
Note: automotive white LED's are a lot more blue, with less red output ( different phosphor blends )
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Originally Posted by AnAppleSnail
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RGB LEDs aren't really white, and serve as an extreme example of 'spiky spectral power distribution.' Any frequencies outside each LEDs narrow output range are absent. This leads to some colors "working" and others not. I have a printer whose pages are black under one RGB light and colored under another. Why? Because the ink isn't the right color. This effect to a lesser extent leads to creepy appearances under spiky sources.
In automotive painting, color matching should be done outdoors in direct sunlight, or using a specially designed light source inside, when no natural light is present.
If I want a vehicle color to stand out under fluorescent lamp or mercury vapor street lighting, it will always be a blue.