2. Camera scanning (negatives), spectral lighting testing, Dynamic range tests
  3. Spectral analysis of different light sources

Spectrum 7

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100 watt tungsten bulb
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100 watt tungsten bulb

  • Cree 4Flow 60 watt soft white LED. Cheaper and lighter than the older Cree LEDs.
  • GE Reveal 2700K "Enhanced Spectrum" LED. Shows neodymium notch at about 590 nm (yellow)
  • GE Reveal 2700K "Enhanced Spectrum" LED (measured) Cree 4Flow 60 watt soft white LED (reference, green)
  • Cree TW 60w soft white 2700 K LED
  • GE Reveal LED (measured), Cree TW LED as the (green) reference. Note that the neodymium notch in yellow is at the same place.
  • Cree 4Flow daylight LED
  • Home Depot Full Spectrum daylight CFL
  • Home Depot Full Spectrum daylight CFL (measured), Cree 4Flow daylight LED (green reference plot) The peaks are in different places.
  • Combined: both the Home Depot Full Spectrum daylight CFL and Cree 4Flow daylight LED are shining at the same time.
  • Two different lamps: Home Depot Full Spectrum daylight CFL + Cree 4Flow daylight LED (measured); Cree 4Flow daylight LED (green reference.)
  • Real daylight
  • 100 watt tungsten bulb
  • GE Reveal tungsten bulb. The original use of the neodymium notch. Note the CRI.
  • GE Reveal tungsten bulb (measured) Tungsten bulb as the green reference.
  • GE Reveal tungsten bulb (measured) Tungsten bulb as the green reference.
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