More Lighting Talk

[Troy F]

Darren, in the equation uE/s*m2 does the m2 not mean square meter? If they are just taking measurements from the focused point then isn't the light rating on MH vastly overrated. I think I understand what is going on here but like to hear other input.

Taking the 1600 uE/s*m2 figure from a 250W Iwasaki, what would be the comparison to a 4x110 VHO set-up (forget IceCap for a moment here)? Is the 440W of light even remotely comparible to the output of 2x250W Iwasaki? I guess you guys that are doing the testing will have some answers but I wonder why no one has done any of these tests on florescent lighting before.