I installed a 5000k SFT-40 into my old, heavily-abused Fenix PD35. I don’t remember what emitter this light originally contained.
I used a heat gun and strap wrenches to disassemble the head of the light. Fitting the SFT-40/centering gasket into the reflector required the hole in the reflector to be enlarged.
This isn’t a very good comparison, but it does at least show how much less bad the tint/tint-shift is. In the ‘New’ photo it may look like there’s a “donut hole” in the hotspot, but it’s not present as long as you’re shining it at something more than, like, one inch away from the light.
