1 phot = 1 lumen / sq centimetre = 10000 lumens / sq metre = 10000 lux 1 foot candle (ftcd, fcd) = 1 lumen / sq ft = 10.752 lux . Outdoor Light Levels Common outdoor light levels at day and night: Illuminance -
The world's brightest flashlight, theImalent MS32, clocks in at 200,000 lumens and has a built-in fan to keep the unit from overheating and hurting your hands. While this is the most powerful option, it does have a steep price tag. It's also not the only option for outdoor pursuits...