5 meter is bit short, you may be off a few percent, some people even claim that 20 meter is not enough for good collimation and thus correct measurement. And technically they are correct.
But then I claim that the error of their luxmeters is more significant than the difference of measuring between 5m and 40m.
Moreover, the focuspoint of not all GT’s is at infinity as it should be, so if you have a very unlucky GT, the best collimation could even be at 5m.
So I’ll test it tonight and if the cd drops off after 5m it’s not a good focus? I damn well hope it isn’t cause that will bother me is there any way to fix it if it’s out of focus?
And if it changes anything I switched my led to a 5700k
Very nice, I have on of those optics myself but have not had time to figure out the mounting setup, I figure I will 3D print it but just have not had time.
Initial measurement with the Optolife lens, flat black, and wavien collar is 3.2 mcd measured at 15 meters. The numbers can possibly be improved with fine tuning, but I am happy! I’m running the flat black at 4.5 amps.
Not bad at all, makes me want to give it a try. With that new “flat black” that has a neutral thermal pad, it would be far easier now. Could even use the stock driver I think with a minor mod.
I’m using Lexel’s BLF GT Oslon driver set at 4.5 amp max. In the case of the GT, the neutral thermal pad is not a big advantage because the light body is not used for the return.
Modded GT
The Sceptre
In person, the beam from the GT appears to go farther. It’s quite impressive.
pscal….very awesome mod! I love it! I was pretty happy with my GT until I read over your mods. Now I’m gonna end up cracking my open before long. Thanks a lot!
Oh, I would love to see some beamshots of a water tower or building from some distance. Would be even better to compare with a stock GT.
Thanks! I no longer have a stock GT for comparison - best I can do is an MF04s. Getting beamshots is also challenging for me right now because I have a toddler and an infant that dominate the night hours. But, if I can get away, I’ll try to get some shots worthy of this GT.