My condolences. :-( Family always comes first. So, Tony should take all the time he needs. I'm sure everyone here will be waiting patiently for his return.
So Vinh is measuring 600lm… the best I can get is 639lm to 650lm at turn on cold, even with a FW3 driver stepping up the top of the ramping… so where do they get 950lms and in his Video he states 1000lms?
I can’t tell you how many times I tested, charged up, retested, fiddled with my lumen tube, etc when testing these two lights. They really highlight the differences that can show up in a non-professional lumen measuring device when looking at pure throwers vs pure flooders. I eventually tweaked my setup enough (getting diffusion just right) to where I’m now more comfortable dealing with these differences.
tl;dr: I feel like Manker’s numbers are a bit on the “optimistic” side. High quality lights overall though. Read more:
Probably better to judge lights like this based on amp draw and throw and derive lumens from that.
Vinh having known 15% too high throw seems absurd cause that is easier to reproduce than lumens? I dont think any tube can do all combinations of mules to throwers reliably.