When working, the colorimeter generally relies on the CIELab color space, and outputs L, a, b values, and color difference values such as △L, △a, △b, △E after colorimetry by comparing the color difference values between the sample and the standard. This article introduces the range of L, a, b of the colorimeter and the meaning of Lab color difference values.

The glossiness of apples is one of the important appearance traits and also the main economic trait. Generally speaking, apples with good color are loved by people. However, the glossiness of apples is a difficult to measure appearance parameter and it is often impossible to accurately evaluate it with the naked eye. This article introduces the method of measuring the glossiness of apples with a curved surface gloss meter.

D65 light source is a standard light source in the D series specified by CIE, and is also the most commonly used color light source in the current standard light source box. D65 light source and D50 light source are both D series light sources, so what is the difference between D65 light source and D50 light source? This article introduces D65 light source and its difference with D50 light source.

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