Re: Tec 40 and UK Mini Q 40 on lithiums: you won\'t believe the results!
If I have understood correctly the amount of lux at 1 meter distance is the same as Candela. The same thing goes for footcandle. The amount of footcandles at 1 foot distance is the same as Candela.
If the lightmeter is more than 1 meter/foot away you must set up a formula. It's not difficult. Let's say the distance between your flashlight and the lightmeter is 10 feet and the lightmeter gives a result of 2 footcandles:
Distance x Distance x footcandle
10x10x2 = 200 Candela
If I have understood correctly the amount of lux at 1 meter distance is the same as Candela. The same thing goes for footcandle. The amount of footcandles at 1 foot distance is the same as Candela.
If the lightmeter is more than 1 meter/foot away you must set up a formula. It's not difficult. Let's say the distance between your flashlight and the lightmeter is 10 feet and the lightmeter gives a result of 2 footcandles:
Distance x Distance x footcandle
10x10x2 = 200 Candela