Norman99
Well-known member
Just checked out the specs for the "variable temperature" iled 312. Has anyone noticed the distance of the rated output is at 50 Centimetres ? why 50 centimetres and not 25 centimetres or the proverbial 1 meter ( approx 3ft.) as most leds are measured ? I wish they can get their act together ( mfrs.) and have a universal standard of measurements or compare the output to units we can all relate to like tungsten bulb watt equivalents. Now 50 centimetres is around 20 inches. Right, I do most of my video work videotaping lizards in terrariums at that distance. Let me figure this one out in roundish figures. 6580 lux at 50 cm according to the inverse square light theory of distance vs brightness, we get 6580/4 at 100cm of 1645 lux. So it is 1645 lux at 1 meter. Roughly equivalent to a 100 watt filament incandescent kitchen light bulb at the same distance of 1 meter. That wasn't too hard to figure out. Please correct me if I am wrong.