... which is impossible to be avoided in current colorimeter. The digital sensor has large dynamic range so that there is no ... . Illuminance measurement: (test condition: vertical) • Relative spectral sensitivity error of digital sensor: f1<±5.5% • Dynamic range: 0.1-50,000 ... temperature etc. for incandescent lamp, halogen lamp, CFL, HID, LED, LCD screen Digital Lux Meter