If they make the optics bigger, then probably not cause the LEDs will have to be closer together. I like the floodiness of my E07 so I think they should have interchangeable flood/throw optics like the ROT66 G2.
I’ve been watching this light ever since it came out, back when there were the heatsink compound issues with the first batch. I ended up buying the pl47 g2 a while back and it’s been a really nice and handy light. I use it almost daily and the quality is excellent. My e07 osram will be delivered tomorrow. Hoping I like it as much as the pl47. I’ll probably end up buying the g2 as well when it comes out.
I assume the narrower optic needs to be deeper so it probably won’t fit the gen1 even if the led footprint is the same. I hope I’m wrong though.
The G2 optic should be 10deg. Previously Fireflies attempted to use the 10deg optic in the E07 but didn’t fit so they ended up using the new 25deg optic. I doubt the E07 G2 optics will be compatible with G1.
How much difference will that make to the candela?
Edit: The ROT66 has 15 degree optics. I wonder how they will fit 10 in the E07
[quote=Lexel]
Getting confused here. My SST20 works fine on turbo with a nasty 30T used a lot. Here is a quote from another thread:
So it depends upon the LED and the driver? Mine just happens to be a good pairing or something? Thanks for helping.
While talking to Fireflies about sourcing face masks and respirators for us, they said a customer in the US is having problems with his two E07 with Osram and asked if I want them and see if I can figure out the problem. I received them and washed them down inside out with detergent and rubbing alcohol as I do for all my new lights and put it to the test. Surprisingly both work flawlessly and I ended up with two amazing lights for free!! woohoo!!! 
I tested them using the Texas Ace Lumen Tube calibrated with Maukka lights and Sekonic C-800-U spectrometer. Output measured at 2s from turn-on.
| Fireflies E07 Osram Gray Unit | Turbo | 6,819 lumens | 6648K | -0.0028 DUV | 69.9 CRI | Blue light relative amplitude 1.00 | -16.2 R9 | 40.9 R12 | 64 Rf | 96 Rg | 30T |
| Fireflies E07 Osram Gray Unit | Top of Ramp | 2,353 lumens | 6320K | -0.0007 DUV | 67.7 CRI | Blue light relative amplitude 1.00 | -25.6 R9 | 38.8 R12 | 62 Rf | 96 Rg | 30T |
| Fireflies E07 Osram Gray Unit | Turbo | 6,466 lumens | 6532K | -0.0024 DUV | 69.3 CRI | Blue light relative amplitude 1.00 | -18.7 R9 | 40.2 R12 | 63 Rf | 96 Rg | 40T |
| Fireflies E07 Osram Gray Unit | Top of Ramp | 2,310 lumens | 6328K | -0.0008 DUV | 67.4 CRI | Blue light relative amplitude 1.00 | -26.1 R9 | 38.7 R12 | 61 Rf | 97 Rg | 40T |
| Fireflies E07 Osram Silver Unit | Turbo | 6,991 lumens | 6497K | -0.0019 DUV | 69.7 CRI | Blue light relative amplitude 1.00 | -19.0 R9 | 40.3 R12 | 64 Rf | 96 Rg | 30T |
| Fireflies E07 Osram Silver Unit | Top of Ramp | 2,397 lumens | 6267K | -0.0003 DUV | 67.6 CRI | Blue light relative amplitude 1.00 | -26.6 R9 | 38.7 R12 | 62 Rf | 97 Rg | 30T |
| Fireflies E07 Osram Silver Unit | Turbo | 6,500 lumens | 6452K | -0.0013 DUV | 69.6 CRI | Blue light relative amplitude 1.00 | -20.3 R9 | 40.1 R12 | 64 Rf | 96 Rg | 40T |
| Fireflies E07 Osram Silver Unit | Top of Ramp | 2,267 lumens | 6244K | 0.0001 DUV | 67.8 CRI | Blue light relative amplitude 1.00 | -27.1 R9 | 38.6 R12 | 62 Rf | 96 Rg | 40T |
Output is slightly higher using Samsung 30T over 40T. I think 40T is the better cell so it doesn't get so hot so fast. Output is a bit lower than I measured the E07 XP-L HI v2 5A. The tint is very pure white on Top of Ramp and Turbo modes. On lower output, it is a good bit above the DUV but due to the high CCT I don't notice the green.
Here's a link to my testing of the E07 XP-L HI v2 5A and SST-20 FA3.
Give me one…I’ll pay for shipping. You couldn’t think of a better deal!
Have you measured the throw?
Nope no setup to measure throw
Why nof WF2 though?
Just got my E01 with the Osram emitter and am NOT impressed.
The beam is horrible, it has rings, and on turbo it turns purple!
I have an E07 with Osram emitters and on turbo it`s fine.
Why does the E01 turn purple on turbo and not the E07?
What cell are you using? The emitter is most likely being overdriven.
I tried using the Samsung 40T just to see what it looked like, only put turbo on for a few seconds and then turned it off.
That cell is way too strong. Try maybe a 30Q or 50E. The forward voltage of this LED is very low so even they might be too much. Maybe a protected cell will be a better choice. Not really sure as I’ve never owned this light.
These are the results luminarium iaculator got with the 30Q:
4.2V, 13.4A, 930 FC
4.0V, 12.5A, 950 FC
3.9V, 11.4A,1050 FC
3.8V, 10A, 1250 FC
3.7V, 9.20A, 1200 FC
3.6V, 8.20A, 1150 FC
3.4V, 7A , 1100 FC
As you can see even a 30Q is overdriving the LED. Not sure how it will work in this light though. Maybe they’ve added resistance so it won’t get driven too hard.
You were right, the cell was over driving it.
According to Neals Gadget website no cells over 10a.
The beam still sucks donkey balls though. Extremely ringy and a little bit of green it looks like at lower levels.
What`s even worse is I had ordered the raw version because everyone was sold out of the black one.
Maybe I can find someone who can put an SBT90.2 in this thing
Just ordered the E07 from Fireflies USA Warehouse.
Osram KW CSLPM1.TG 6P 6500K, Black w/Blue auxiliary.
Been waiting a long time to pull the trigger and I’m looking forward to receiving the light.
After reading this thread, I’m thinking to order the Samsung 50e and not the 40T as the 50e will give me longer runtimes and reduce the draw on the LEDs increasing their longevity. Although the lumen output would be reduced.
My thinking is that the reduction in lumens will not be very noticeable but the increase in runtime will be perceptible to more of a degree.
But regarding the 40T, would the decrease if any in LED longevity be drastic or so little that it wouldn’t matter compared to the 50e.
And what kind of lumen reduction am I looking at?
Thanks….
Mine draws almost 30 amps with a p42a and almost 25 with a 50e at turn on turbo. Both drop very rapidly. Only slight difference visually, hard to tell without doing both side by side.
My suggestion is to buy both. 
25 Amp draw with a 50E?
Funny I was thinking to buy both as I need 2 21700’s But if the 40T would likely be hardly perceptible regarding lumen decrease/increase I was on the fence regarding the 40T & 50E, but maybe I will buy one of each as I always like to have a spare and the E07 is my first 21700 light.
My edc has been the Emisar D4 XP-L Hi V2 3A 5000K which has served me well.
Surprised me too. I was using 12 gauge wire and a clamp meter. The light throttles very quickly. I would guess when it starts from cold the temperature increases so quickly that the software thinks it’s going to go through the roof and it throttles back almost immediately. After it starts to throttle I can bump it back up to turbo and it actually stays full brightness longer the second time even though the light is warmer.
It’s the only light I have that you can hear the pwm of FET.
I received a response from Fireflies.
The lumen output with the 50E would be 4500l (–2800l) compared to 7300l with the 40T. Taking into account that 7300 may be slightly on the high side, an almost 40% less lumen is a little too much difference for me to consider using it.
I saw that Vinh recommends the 50E though.
Can anyone confirm in their experiences that the reduction in lumen would be that much?