Olight H15S Headlamp (XM-L2, 1xLi-ion, 4xAAA) Review: RUNTIMES, BEAMSHOTS + more!

[maukka]

Just read the original review with care and noticed the part about flickering being noise, not pwm. Didn't know that. Either way, the flickering can easily be seen with the naked eye when looking straight at the led itself, but not so much from the scene illuminated by the lamp.

Here is a pic of the new main on/off switch on the battery compartment.

 

[selfbuilt]

Nice to see independent confirmation of the flicker pattern - a very consistent result. And thanks for the pic of the updated compartment.

 

[maukka]

Measured the spectrum with i1Pro using HCFR and cct/cri with ArgyllCMS spotread. Olight S10 with a more spiky blue and cooler temp for comparison.

And an album with more measurements:
http://imgur.com/a/Fe5Jh

 

[maukka]

Nice to see independent confirmation of the flicker pattern - a very consistent result. And thanks for the pic of the updated compartment.

I guess the flickering on high is almost impossible to see since the level doesn't drop very low unlike on medium where the signal level varies more although doesn't drop to zero like on true pwm. Here's a couple of charts from a remeasure.

1. "Zero level". Light off:

2. H15S "High"

3. H15S "Medium"

4. H15S "Low"

5. Eagletac D25LC2 "Strobe" to represent pwm like behavior