Nitecore EC23 - Spot at Center of Beam

[Lux-Perpetua]

My Nitecore MH23 has the same issue as you can read here:

LED test / review - Cree XLamp XHP35 High Intensity C4 + E2 (5000 K) - Really high performance in XP footprint?

I have just recognized that my Nitecore MH23 with an XHP35 HD shows a little less brighter spot or dark area right in the center of the big white spot. It can only be seen when doing a whitewall shot but it’s definitely visible. I checked the flashlight’s LED but all four die areas seem to work fine. The dark area only disappears when being closer than 1,5m to the wall. Any distance beyond 1,5m will reveal that there is a minor dark spot within the spot. According to the first post of koef3 I a…