3nh company history
3nh starts from 1998, and has launched YS series Grating spectrophotometer, NS series spectrophotometer and NH, NR series colorimeter, ISO12233 resolution test chart, optical image test solution and sp...
Prouducts 
Contant News
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Shanghai ChinaCoat 2017 - 3nh
3nh Shenzhen office will join this China Coat 2017, and we will bring YS series color measuring spectrophotometer, NS series handheld spectrophotometer, portable colorimeter, single angle and tri angle...
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How to convert between sRGB and CIEXYZ'>How to convert between sRGB and CIEXYZ
How to convert between sRGB and CIEXYZ Describing color has always been a complex challenge. Cameras provide their image data in the common sRGB color space, so chances are high that any image y...
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ISO published new resolution standard for a good reason!
The International Organization for Standardization published a revision of “ISO 12233 Photography — Electronic still picture imaging — Resolution and spatial frequency responses” in February 20...
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