Hmm, just looked back through the entire thread and didnât see that I answered the OP.
Iâve seen that plenty of times, and itâs rather ânormalâ for very-well-focused lights, especially with bigger reflectors.
In the GTmini or -micro thread, I pointed it out, and someone said it might be bad, but nope, Iâve seen that in other lights as well.
Most times, the hotspot is yellowish, and the âholeâ is actually slightly blue.
Only thing I can say is that itâs most pronounced in larger reflectors with small LEDs and definitely SMO and not OP.
Kinda makes sense, though, in that the hotspot is made by light thrown off the sides of the LED (straight-out is spill), so if perfectly perfectly focused, youâll get whatâs essentially a doughnut-hole in the middle.
The bigger the LED, the more off-axis light hits the reflector and blurs the hotspot, covering up the hole.
So⌠P30, GTmini/-micro, etc., yeah, par for the course. Nowhere near as objectionable as a big angry corona around the hotspot, and often itâs actually hard to see unless you jiggle the light, so I donât mind. In fact, I take it as a sign that itâs perfectly focused and -centered.