regularguy

First off thanks go out to the agent for his willingness to do research. Well done.

The 12.6 you guys are talking about comes from the equation I gave earlier. I=L/A The area you are talking about is the area of the sphere that the light makes at a radius(d) of 1 foot. The spheres formula is 4pi(r^2). The 4pi is the 12.6 conversion number. So actually all the numbers are off because the conversion factor is not just 4pi but the equation for surface area of a sphere. You would use 4pi at one foot. All others would have to be adjusted by multiplying them by the radius^2 also. It just so happens that you don’t need to do this at 1 foot because 1^2 is 1. Agent can you send me the foot candle numbers and I can convert them all and post. You have done enough by actually getting the info. I will comment more after this.

I think lumens are good enough as long as you understand haw the emmited spectrum is distributed across the wavelengths.