Or should we paraphrase âbothered by tints, cri or pwm is whinning at its finest when it doesnt affect their utilityâ when the big bad barney the purple dino halo ring is hugging your light :innocent:
Why none of these reviewers mention it or a ring that i can easily capture on my iphone camera doesnt show up on THEIR white wall beam shots is beyond me
My D80v2 with SST40 has a similar distinct blue/violet ring around the periphery of the beam. Itâs noticeable but in no way affects the usefulness of the light. It resides outside the useful area of the beam and isnât a problem in actual use.
In practice, it doesnât really affect tint/CRI since it lands far outside the usable light pattern.
For what itâs worth, I have an S2+ with a 219c which does not have any visible blue artifacts around the beam.
I guess we donât see it mentioned because it doesnât really affect the performance of the light. If it was right around the hotspot weâd probably see many people complaining about it. Itâs far enough out that itâs easy to just ignore it.
If it really bothers you, perhaps you could try a different reflector/optic or perhaps a non-AR coated glass window. If that doesnât help, consider a different emitter.
Its because the reflector shape is not perfectly optimized for the LED. If you want a clean hotspot you need to use TIR lens. But it will be less bright.
Iâm pretty sure reviewers donât mention it because it doesnât effect the usability of the light like tint, CRI or PWM may. Nobody uses the uses the area outside of the useful spill of a light to do anything. At any rate, the halo is from a combination of AR glass and the bezel of the light.
Blue Convoy S2, No AR glass. Deep blue halo like yours. Green halo from very thick GITD Oring.
Green S2+, AR Glass, TIR (Triple). Green halo
Purple S2+, AR Glass. Huge purple halo
Black S2+, No AR glass. No halo
Desert Tan S2+, AR glass. Brownish-orange halo, pretty faint.
Interesting thanks for the pics ⊠as someone said above the s2+ seems quite susceptible to these issues, you might get the same color halo as yr light !!!
Interesting that the BLF A6 with AR which is probably the most similar light in price, form and function doesnt have the halo in practical use, though you can see a bit of color with the same type of shot as above. Seems like the blackbezel helps
Compare to s2+ SST40
As to if it âmattersâ ⊠well thats up to the end user perhaps not flashaholics who go off about a slightly off tint or slightly low CRI
BLF A6, roughly half beam shot, so well within the field of direct view⊠just fine
Same shot SST40 ⊠well look at that purple ring right in the field of vision
Methinks that the average user or muggle if one wants to feel better, would notice that first before any small tint or CRI differences
But then it doesnt seem important for reviewers to even say a quick word or two about it âŠ