On 08/07/2015 03:50 PM, Ben Goren wrote:
Can anybody suggest some sort of reliable way to get an accurate calibration in
absolute units of either a typical Sekonic meter or an i1 Pro in ambient mode
or something like that? I'm thinking, ideally, of a way of creating a light
source of dependably-known illuminance that I can measure. An unfrosted
incandescent bulb, maybe? And some way of verifying that the wattage printed on
the bulb matches what it's doing? And the math to calculate the rest?