beamis
Newly Enlightened
I realize that this isn't a test that can be used to authoritatively measure the output of all lights, but since both lights in this case have very similar beam patterns and reflector sizes the relative difference between them is still valid. The data from these readings correlates not only with my initial assessment of the relative brightness between the lights, but also with 4Seven's lumen ratings. It would be a pretty amazing coincidence to have a Zebralight look dimmer than a Quark by about 50 lumens, read dimmer on the lux meter by just what you'd expect for a light about 60 lumens dimmer than the Quark, have the Quark read at values that one would expect for the rating claimed by 4Sevens, and actually have it turn out that all of those observations and measurements were wrong. I'm not saying it's not possible, but it's going to take a lot more than second-guessing to knock cold, hard data in my mind. I'm going to see if I can borrow the meter to do a ceiling bounce test or some other form of test on reflected light. I'll have to do it fast though because I've got an RMA on the Zebralight.
123 lumens is only 70% as bright as 181 lumens.
123 lumens is only 70% as bright as 181 lumens.
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