"WHITE LIGHT" illumination using 5000 Kelvin fluorescent lamps and Better Light's standard Infrared-blocking filter on the camera lens.
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ULTRAVIOLET illumination only, using special ultraviolet fluorescent lamps and the Better Light IR-blocking filter to prevent any influence of infrared contamination.
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ULTRAVIOLET illumination only using special ultraviolet lamps and IR-blocking lens filter, and a Wratten #12 Yellow filter to further increase the contrast.
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