Actually your 100mW will be a lot more than just half as bright as the 200mW because of the "4 times the power=2 times the brightness" factor.things said:so it will be half as bright as that? the lasers in the laser show i have coming are 100mw red @ 650nm and green is 40mw @ 532nm, is this good for a laser show? i just emailed david and he said i can control the lasers movements through dmx!! cool!! hurry up and get here laser!