... difference by E*ab, L*a*b, CIE_L*a*b, CIE_L*c*h.•Standard deviation within E*ab0.2 ... E*abTest range L: 0~100, a: -128~127, b: -128~127Display Δ E*ab, CIE_Lab, ΔLab, CIE_LchSensor ... Silicon photodiode arrayAperture (mm) Ø8Light source C light sourceTest time About 3 secondsTest interval 2 secondsPower ... < 85%RHPower supply DC/5V (1.5A)/2 x 1.5V (AAA) batteryNet weight (g) 204Dimension (mm ...