Here is my mf02 neutral white and mf04 cool white…
Thanks for the comparison pic 
Cool pic. Are the brightness levels low enough that the hot spots in the pic are really this size?
No.: it look different in person…
If you put both on the lowest level, can you see any difference in the hot spot size?
The bigger reflector should produce a slightly smaller hot spot (in theory) which is where the extra throw distance comes from.
It would just be nice to confirm this theory since I don’t have two so closely similar lights.
Has anyone measured their 04?
Yes, lots of times. You want lux or lumen?
Hardusvd70 measured 1.36mcd on his CW MF04.
I wanted candela but wow….1.36mcd is a big number seems like a possible miscaculation 
Go here and read down. [PART 2] Official BLF GT Group Buy thread. Closed, but Public sales open! - #2208 by Hardusvd70
He got the same candela at 10m and 25m.
I do the 25m calculations in post 2217.
Incredible! Honestly thought it would only do maybe 1.1mcd max.
So even more throw than a stock GT……. :money_mouth_face:
Mine doesn't go passed 0.9 million.. I really need to measure again.. and probably buy another meter.
Maybe your LED is a bit off center?
Yours is CW, right?
NW seems to give lower readings.
A note for anyone that has an off center emitter:
Unscrew the bezel enough so you can lightly tap the light and nudge the reflector (in whichever direction you need) just enough to center the emitter with the centering ring. Worked for me.
Not meaning to flood with posts but my MF04 had smoke coming from the emitter?..…now no more smoke after ran it on turbo a few times. Uhhh is that normal? I’m thinking maybe some sort of residue was getting burnt up.
It might have been leftover liquid flux. There were a couple of GT’s that had that.
Never thought of that. Now it makes sense, flux smoke.
Thats how you know it’s a serious light 
Got 980K max Lux measured @14m on a UNI-T Luxmeter. Emitter is not properly centered though.
After recalibration 1.05M Lux. Emitter is still not 100% center, I might try again later.
P.S.: neutral white
Tested the light outside for the first time. This is absolutely insane. I wasn’t this impressed with a light in a long time… the reach is ridiculous. :sunglasses:
Anyone tried both MF02s and the MF04? Is the difference huge? I have a MF02S on order and I’m going to use it to watch for deer on my property. Furthest distance would be approx 600meters before the woods make it impossible to see anything so it needs to throw good at that range.