KLux is thousand lux, which I think is the same as candela at 1m
1 klux = 1 kilolux = 1000 lux, SI units.
1 Klux = 1000 lux
Wtf? And what does this tell me when shining my light in the bush?
. . . So if you turned the light on and walked 141.42 meters down range, the source of the light would appear the same as a full moon (approximately).
Well, according to the ANSI-NEMA FL-1 standard, you can use the lux measurement to determine the effective beam distance. That is, the distance at which the beam will measure .25 lux (which is approximately the same as the light from a full moon). When you have you lux reading at 1 meter (candela), take that number and divide it by .25. Take the square root of the result and you get the throw in meters. For example, a light that makes 5,000 lux:
5000/.25 = 20,000
sqrt(20,000) = 141.42 meters.
So if you turned the light on and walked 141.42 meters down range, the source of the light would appear the same as a full moon (approximately).
Well, according to the ANSI-NEMA FL-1 standard, you can use the lux measurement to determine the effective beam distance. That is, the distance at which the beam will measure .25 lux (which is approximately the same as the light from a full moon). When you have you lux reading at 1 meter (candela), take that number and divide it by .25. Take the square root of the result and you get the throw in meters. For example, a light that makes 5,000 lux:
5000/.25 = 20,000
sqrt(20,000) = 141.42 meters.
So if you turned the light on and walked 141.42 meters down range, the source of the light would appear the same as a full moon (approximately).
Very informative answer. Thank you. Puts it in perspective for sure.
It is more of a close to mid range solution. The general rule I follow is that 2 lux is needed for definite target identification. About a month ago, I took some measurements at 100 yards with a Hound Dog, M60, M61 SHO, LX2 and a Nailbender XM-L2 engine. I just grabbed the note pad into which I wrote the results.
The LX2 did 1.01 lux, the M60 did .72 lux, and the M61 SHO did .65 lux. The LX2 did 1.01. The XM-L2 NB did 1.22 lux. The Cool Hound Dog did 2.70, and the Neutral one did 2.44.
When I was measuring the E2DLU at 1 meter (it did 18,360 lux) , I grabbed the Neutral Hound Dog which did a little north of 21,000. I suspect the E2DLU will be usable out to 125 or so yards. The park where I took my measurements has enough space for measurements out to about 150 yards.
If the weather is nice this weekend, I plan to enlist the help of a friend to see at what distance the Cool Hound Dog, the E2DLU, and a yet to be delivered NB XP-G2 OP reflectored unit provide 2 lux. Naturally, results will be posted here.
Grizz
I am looking to get an M61N and not sure between the SHO and just the normal N. I would be running this on an MD2 body, so if I go with the SHO it would run with 2x18350's. Does anybody have both on these dropins that could "shed some light" on this for me.
Thanks
I am looking to get an M61N and not sure between the SHO and just the normal N. I would be running this on an MD2 body, so if I go with the SHO it would run with 2x18350's. Does anybody have both on these dropins that could "shed some light" on this for me.
Thanks
I would go with M61N or M61 219, depending if you need more throw or flood.
So which one throws better and which ones is for better flood?
Nice,
What drop ins did you get?
I like the Camo DM2!