News

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3nh Innovation from Products to Marketing Mode

3nh high-quality colorimeter has well received by the market because of the technological innovation. Our colorimeter has taken four innovation patents which is the rare innovation resolution in the i...

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NH Series High-Quality Colorimeter

In 2011, 3nh has officially launched NH series high-quality colorimeter. In color management field, it has filled the gap of high-quality, high-stable and high-precision domestic colorimeter in China ...

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ISO 12233 RESOLUTION TEST CHART

3nh chart is precise aid, designed for image quality determining and for judgment of resolution limits of digital cameras. The chart is designed for photographic cameras up to 2000 addressable pixels ...

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The Color of Objects

There are three major elements to perceive color: light, object and observer. Any change of these three elements will influence the observers color perception. When the light source and the observer d...

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Human Eyes to Distinguish Colors

The color difference unit, NBS, is derived from the unit of color difference formula which is established by Judd-Hunter. In 1939, the American Bureau of Standards adopts this color difference formula...