You have such memory. At the time of our discussion and @ToyKeeper suggested such effect for the white ring around the green center, I actually crop-isolated that area and found it is a real change from green to white, not an illusion of Mach bands. If I recall correctly! It’s so long ago. Let me look again.
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Good point. I see what you mean. I don’t mind such outer ring (vs central area), or I hope I don’t mind LOL. Poster was talking about donut hole at 200-300m, which would be an absolute deal breaker and a major screw up by Firefly. I am much relieved now.
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If I understand you correctly, true only if you try to capture correctly every part of the beam, the extremely bright hotspot AND the dim spill, at the same time. OTOH, if you try to show just the bright hotspot, or just the dim spill, camera exposure adjustments could be easily made to show each correctly.
The important part is, it conveys the information and it does a good job of it. I’ve posted pictures of M21H with different TIRs that clearly show changes of colors (at least on my OLED computer screen). Another example: the beamshot taken with probably a not very expensive camera above shows exactly what we see in real life, a green center surrounding by a white ring. And that there is no donut hole, fingers crossed!
The transition from hotspot to corona already requires some dynamic range that the camera struggles with. One of my phones has a camera so bad that it will introduce yellow/magenta fringes in response to an intensity gradient, even though the light is completely consistent in tint. So unfortunately, one can trust cameras to accurately capture neither artifacts nor tint, if the variation is small.
Re-posting this old picture so T9R owners could be prepared for how green FFL909MX is going to be 
. Also, the SBT90.2 beamshot shows the same green center and white ring, so beamshot of T9R above is nothing unexpected.
Fairly certain I turned output of TS30S way down to photograph both it and the much dimmer D4V2 at the same time, so the picture is likely greener than with one would see with normal use. But really, I forgive and look the other way with SBT90.2 because it is such an incredible thrower otherwise, and because it’s not like I’m analyzing bougainvilla red 200 meter away.
The warmer 5500k CCT is a plus, rare for super-thrower LED (most of mine are 6000k or above), so there’s that. BTW the white ring is less prominent in lower throw TS30S and more prominent in higher throw TS30S Pro. I wonder if this is an effect of the larger more throwy reflector?
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Firefly sub-reddit going crazy with T9R and SBT90.2 vs FFL909MX beamshots. 
. I don’t know about “dethrone” but sure can’t wait to get my T9R!!
Source https://www.reddit.com/r/FireflyLite/comments/1hyrq8d/dethroning_the_sbt902/
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Basically it’s a greener, more efficient, more expensive SBT90.2. Meh.
I hoped FFL found a way to make high power throwers affordable, but this ain’t it. Someone was quoted 30$ excl shipping for a bare LED. That’s more than a SBT on MCPCB from Simon.
And I have absolutely no clue why the SBT is as expensive as it is in the first place. Pretty sure it’s cheaper to make than a XHP70.3 (larger dies, more phosphorus, more complex substrate because 2s2p), and still costs way, way more.
If they manage to get the tint under control with later batches, and drop the price to at most half of that once production ramps up, I will be excited for it. Until then, meh.
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I wonder why beamshot of round LED 909 on the left has squarish corona, while that of square LED SBT90.2 on the right seems like it has rounder corona?
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Good catch, I did not notice. Curious.
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That picture is mislabeled. SBT is on the left, FFL on the right. https://www.reddit.com/r/flashlight/comments/1hyrprv/comment/m6l7gth/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button
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Thank you. I just could not figure how a round LED could make a square corona, even though the other way might have been possible, seeing how a square LED could make a round hotspot.
Thank goodness I was about to start a deep analysis, concluding with “nothing about these two beamshots surprises me.” 
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I just tested code “FFLNEWS T9R” on the check out page of this light successfully, bringing it down with second discount to $53 
. Damnit I missed it. But… it is destiny that YOU should own this light LOL.
The Desert Tan option now says “microblemish” next to it. I don’t remember it did when I ordered mine. Could this means they are towards the end of the Desert Tan supply?
Reddit testing result here shows FFL909MS has higher Turbo output than SBT90.2 in same host using same battery. I have two Wurkkos’s with SBT90.2 so should be able to compare soon. My light is at the airport per tracking (grin).
Mine has zero movement since 6 days ! 