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Say i wanted to measure the time it takes for a light source to achieve 100 footcandles(The ambient light source would be increasing gradually in light intensity) What would i need?
And got the following answer:
Most photographic light meters do not read foot candles, you need an environmental monitoring type light meter such as this one - http://www.globaltestsupply.com/test_equipment/Extech_401027_Pocket_Foot_Candle_Light_Meter.cfm It doesn't have a built in timer but you could just switch the meter on before switching on the light source and note the time it takes for the digital display to change to 100 foot candles.