since I don't have the thousands of dollars to commission a custom production line I need to settle
How about a zebralight sc52w? Eagletac d25a?
ToyKeeper said:I measured the D25A I received, and here are the results:
Tint: About 4300K or 4400K. The spec said 5000K.
D25A-219 low / "moon-mode enabled" group:
So, I noticed some pretty large differences between the official D25A-219 specs and my own measurements.
- Low (spec=0.5lm): 4.67 lm, current-controlled
- Med (spec=7lm): 18.5 lm, with PWM
- High (spec=55lm): 93.5 lm, current-controlled
Lumen output
There is no moon mode. Not even close. That mode is so far off spec that it's actually brighter than the "low" mode on my other lights.
That review was a bad sample. I got the same light with a definite moonlight mode
Selfbuilt did not test the D25A, which is all I own. The D25A only uses PWM on a couple of modes (and it's the fastest I've ever photographed), and moonlight has slow PWM-like pulsation (depending upon sample and voltage) on moonlight.
Here are three D25A samples swept along with an HDS across a time exposure. You really can't "see" PWM this fast unless you know exactly how to look for it - I never noticed it until another reviewer pointed it out.
And a typical D25A moonlight on low voltage vs a Quark moonlight - cellphone test and time exposure.
L11c sized single AA light with a forward clicky, Moonlight/Low/High settings, and no PWM ... [and] a good bolt on clip
Does it offer a Nichia option?Maybe the older Thrunite T10
Since we are splitting hairs, I think this old photo (a time exposure sweep) is a pretty good visual representation of the progression from "oscillation noise" to true PWM. L to R: SC52, Quark AA, D25A and MDC AA. I swept them all together, and fast as I can possibly swing my arms. Focus on the very bottom of the beam swipes.
IMHO: the SC52 and Quark show oscillation noise, and are undetectable with the naked eye (which I consider myself pretty good at), and an HDS will look similar, but this is not PWM. By my definition, the D25A crosses the line of true PWM (on ~3 modes) but I really need to concentrate to see this one (and it's one of my favorite lights, own a half dozen).... it is the fastest PWM frequency I've seen/photographed. The MDC AA is kinda slow, and it see it annoyingly frequently.
But if you don't know how or what to look for, my advice is - do not learn!
I broke 2 of the L11C by dropping them on the tile bathroom floor from about 2 foot up. I sure didn't buy any more.
Also it has blinkie modes