I had observed previously the 519a 4500k’s Duv drops with heat, in 519a more than 219b for example. It appears the same thing is going on here with 519a 5000k. I noted on a post above that Turbo’s beam color is most beautiful and clearly better (less green) than the dimmer setting. I thought it was output related but now I am thinking heat also a factor.
By continuously screen capturing Opple’s Duv (25 times total), I could follow Duv behavior of 519a 5000k in the 1 minute after a Turbo start:
At start of Turbo: –0.0021
As the light heats up (and stepdown starts), Duv becomes more negative rapidly, peaking at –0.0051 at 40 seconds. Output roughly 70% of Turbo.
With stepdowns, light becomes dimmer and temp cools, and Duv now turning towards positive, hitting 0.0000 at 1 min
I ended the test when light becomes very dimm and output very roughly 10% of Turbo, at 1 min 6 second Duv is 0.0002.
Yeah this is what I did on Christmas day. I have empty nest and forgiving wife. But really one of the most fun flashlight things I’ve done. IMHO the finding here, pending further amateur home testing when I have time, is that TS32 likes heat and it likes higher output, and the most beautiful beam (most negative Duv) is 40 seconds after a Turbo start. Time yourself and enjoy that beam at 40 seconds if you’re interested. :partying_face: :+1: