If it's who I think it is, he'll take good care of you.
I had an issue with one light recently, and aside from having to pay for shipping there (and it was my screw up that resulted in me needing service) there were really zero problems, and he shipped the light back to me express.
It’s 300 lumens. The Human eye cannot distinguis between 2600 and 2900 lumens. That’s less than a 9% increase in the independent variable versus the exponentially-small dependent variable of what your eye interprets. Unless you plan on boosting the driver further, which IIRC is impossible because the TK-75’s turbo mode is direct-drive…why make a fuss? Did you pay more for it than the previous-gen model costs?
My mistake, I thought turbo was DD. Sorry. The way I understood it was that the human interpretation of light, like sound, is on a logarithmic scale and that we interpret a doubling in output as a 1/3 increase, so an increase of 9% would look like a 2-3% increase, and I don’t know about you but I’d have a hard time telling a 2% increase in brightness.
You're right about perception, but if you had both lights you would be able to see a difference, though probably not outside, only on a ceiling bounce, switching from one light to the other.
They aren't 'on' green or silver anythings, that's the color of the material they're made of. A green XM-L2 would probably be about as common as a 4-door AC Cobra.
Condescending what? You were asking questions common for somebody who doesn't know these things, I was trying to explain that the green part and the silver part is the LED itself, not some other component. They both have the same solder pads/footprint on the bottom, they can be soldered to any board made for that platform.
And where the hell do you see a green Sinkpad?! I see a post with two black aluminum MCPCBs, and another with a white 20mm Sinkpad and a white 16mm Sinkpad...
Bare XM-L on left, underside on the right showing the + & - contacts, and big thermal pad in the center
XM-L and XM-L2 share the same dimensions on the contact pads on the bottom, they can be interchanged on any board that uses the 'XM-L' layout. There are other brand LEDs that use the same basic footprint and they can all be used on the same boards.
It certainly is a part of the LED. I think the actual name for what we normally call an "LED" is an LED package.
The actual Light Emitting Diode part of the package is the die, so technically, lionheart wouldn't be wrong in asking what is the green thing that the LED is sitting on, cuz that would be another way of asking what is the green thing the die is sitting on.
But generally, I think we refer to the entire package as the "LED" and not just the die.