Originally Posted by
cehowardGS
It is a known fact that they jack up the lums. However, I don't believe that are 90% off..
Example, my favorite light is the Keygos M10a.. That baby is rated at 1600 lums. Okay, I know that baby is pushing more than 1000, I know not 1600, I think, but it is over a 1000. For me, that is a good bang for the buck..
Also, would be nice for you to get both of those lights, I bet you will find out the answer then. My money would be on the cheapee to be the winner.
Truth is the fact that the XML can only output 900 to1000 lumens if driven at maxium current of 3 amps. This fact is from the
Cree Data Sheet.
I have the Keygo M10 light myself. In my sphere test, the Keygo does not give out any more than those light that are Ansi FL1 rated at 850 lumens. I test it against my Jetbeam BC40 in my DIY IS Sphere and the meter reading was about the same. What makes it appears brighter than 1000 lumens is the throw factor which the Keygo reflector is good at doing. It does have a good throw at 25K lux @ 1m. The reflector makes a heck of a difference. For example, if you take the lens and reflector and just shine the bare LED out the flashlight, the beam will appear very little like if it was 500 lumens or less, however adding back the reflector makes it appear much more because there is much less wasted lumens spilling all over everywhere.