Nta ntawm Digital Light Meters
1. Kev ntsuas ntau yam 1Lux-50,000Lux 2. Cov neeg siab thiab cov lus teb ceev
3. Kev nyeem tus nqi ntsuas phoo muaj peev xwm ntsuas tus nqi ntsuas
4. Cov cim thiab cov khoom tso saib, nyeem tau yooj yim
5. Tsis siv neeg xoom rov pib dua
