So the C8 went from 19kcd to 74 kcd I think. Pretty cool really. Now it can outthrow a 7g9. Same concept as aspherics but multi-flashlight use and bulky?
What is that reflective film you used around the glass tube?
Yes, I would just like to clarify there is actually less light. The difference is it is all focused into the beam rather than "Wasted" in the spill. For example this light used 200 lumens (very small amount of light) but is able to achieve 1.8 million cd.
Long focal length magnifier lens can focus the beam to the wall & make the spot very bright, 10x brighter easily, but this diverge the beam and thus reduce flashlight throw.
In this case, greatly increased lux on the wall = greatly decreased throw!
This is like playing with magnifying glass to focus sun light, the focused spot is strong enough to ignite fire, but will no longer throw long distance.
Nice DIY collimator lens? So they meant lux instead of increase output, blame 50 years of Western Capitalism.
i beg to different…although i only pointed the light to the wall within from 10’ away, that’s because my point and shoot camera can only zoom so much…
basically what i’m trying to do is… just like a telescope… it does magnified the light output.
now keep in mind when i’m using Tmart 3W MXDL light, and pointed to another wall 50 feet away, it barely create a hotspot that visible.
but when i used the this device, it can create a brighter hotspot.
i’m gonna try to put the light meter on that wall and have my wife take the picture and see if it makes any different.
you don’t have to be very well educated or an engineer working for NASA to see the different in brightness.
it’s a simple 2X magnifying glass in the front… i’m wondering if it brighter if i can get my hands on one of those 4X or 5X power 
that’s something that i found in craft and hobbyist store… it sell for $2.50/ yard
you don’t have to be a Rocket scientist to realize which one is brighter.
it’s a very simple concept… all the light that was scattered when it leaves the led diode was then focus into a tighter spot, thus it can throw farther.
example… if you have a running water coming out from the hose… it can only shoot as far as it can get.
now if you put your finger on the hose, slightly covering the hose… the water will travel farther than before.
same concept.
the point is… it doesn’t matter to me if it the output is the same or not… but if i can see more farther than my measly flashlight can shoot… i’m happy
PS:do you think the education system in Croatia is better than in US? ’cos i don’t think croatia able to send the man to the moon yet
Obviously problem is in terminology. Light is not brighter, it is as you said just better focused. Topic subject is simply misleading…
PS. Our education system is quite good but ability to send a man to the moon (or hollywood studio) has little to do with it.
hmm… topic subject is misleading?
which part that you don’t get? if it using the same light without modying the driver… and the light is more brighter than before… and it can throw more farther before…so what would you like to call it? 
Daylighter, brightness refers to the lumen output. This is the total output, which actually decreases with your mod due to inefficiencies in optics. Throwing further is an increase in candela, or how much light there is in the very center/brightest part of the beam. This goes up in your light since more of the light is going forward and less is in the spill.
sorry scaru… i’m still at lost here, my mod enabled me to shine object more clearly than before… i can see shine more farther than before… but it doesn’t mean it’s more brighter? so what you guys call it then? :8)
Brightness, is the total light. To get an idea of total light point the light at the ceiling and measure lux on the floor next to the light. It will be less with your mod.
The reason it throws further is because more light gets focused into on spot.
Here a diagram is.
Notice how before there are 9 beams before and 7 after. Yet the after one would clearly light up things further away, despite there being less light.
Yea, as people mentioned the brightness is about the same besides losing some through your device. If you did a ceiling bounce test, the room would stay about the same brightness whether you had your device on it or not because the lumens from the emitter remains the same. While the hotspot becomes brighter, your spill becomes dimmer.
This thread is very confusing and filled with misunderstandings. Take your time and read the truth here:
Brightness -Wikipedia
and here:
Luminance -Wikipedia
Is this the same concept as why an XP-G can outthrow an XM-L with superior lumens?
It is what happens, but is not why. The reason the XP-G can throw further is the smaller die size, so it is closer to a point source of light. So what matters for that is lumens per mm2. Which is where the XP-E2 wins, but then you have to take into account the beam angle which is narrower on the XR-E which could be beneficial with aspheric lenses, but is detrimental with reflectors.
XPGs can throw further because the surface area of the XPG die is 1x1mm while that of the XM-L is 2x2mm ie, four times as large. Reflectors in a different way from aspherical lenses project an image of the die forward so the smaller the die, the smaller the size of the hot spot.