Ketra's A20 lamp is a fully tunable, calibrated light source that ranks high on the color rendering index for its white, pastels, and saturated colors. It can dim to .1 percent—unlike other LED lighting, which usually dims to 5 percent, says Ketra CEO Nav Sooch.  Photo 1 of 5 in LED Lighting So Brilliant It's in an Art Museum

LED Lighting So Brilliant It's in an Art Museum

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Ketra's A20 lamp is a fully tunable, calibrated light source that ranks high on the color rendering index for its white, pastels, and saturated colors. It can dim to .1 percent—unlike other LED lighting, which usually dims to 5 percent, says Ketra CEO Nav Sooch.