Luminous SFT70 3000K high cri is one of my favorite emitters. I have 3 myself plus a couple more 6500K & 5000K. I recommend the SFT70 all the time. Excellent throw + flood combo. Recently seeing comments about donut holes & people saying they don’t like it because of that.

First pic SFT70 5000K close up, second pic M21B SFT70 3000K 1 meter, third pic less than 4 inches. I can make pretty much any light “donut hole” if I get it close enough to a wall. None of my SFT70 have donut holes in actual use over 6 inches away from a wall. What you see that close is because the emitter is made of 4 squares made into a bigger square. It does not affect performance at distance.

My question is, are others getting donut holes at distances greater than 1 meter. I’m wondering if maybe there are defective LEDs out there. All my SFT70 are beautiful beam profiles. Now, I will say that I have a T6 SFT40 3000K that @ 3 meters from a wall I can see the faintest bright halo around the edge of the spot making the center appear slightly darker. Are these the things people are calling donut holes?

I’m curious because if people are getting SFT70 3000K with less than acceptable beam patterns I would like to know. Was I lucky that I have M21B, C8+ & M21E with SFT70 3000k with no donut holes? Plus 3 SFT70 6500K & 1 5000K? Or do people think that if I have a donut hole at 4 inches from a wall my whole flashlight is defective at any distance?