Beam intensity measurment compendium

saabluster

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In the interests of full disclosure I decided to publish here the results of lights I have been measuring in the recent past. This is nowhere near as many as I have tested in the past. I just have not always kept such good records but it is now part of my routine to test and record. The idea is to provide others with a good idea of how my setup reads. I will say that this is far from ideal statistically as each light measurement listed is one sample except for some OMG and OneStopThrowShop production lights. No way to know where exactly the light I purchased falls in the overall performance range of the product line. Ideally I could test 10 units of each light as that is what I have found to be reasonably representative of the typical performance when averaged. ANSI only requires 3 units to publish a figure which I find beyond absurd. So take these single unit figures(except where listed) with a grain of salt.

Where possible I will provide the spec listed by the manufacturer, my measurement of the stock light, and then my measurement of the light modified by me if applicable.

For those who may wonder I test my lights at a distance of about 8 meters between two fixed points in my house. The distance used is the farthest where I can still read the meter but also is “tuned” to allow the meter to read the actual number without the need to calculate or have a correction factor. The peak reading is taken between 30 sec to a minute after turn-on. The light must be at room temperature. So if it has been handled a bit or run some and is slightly warm I let it sit to fall back to ambient before taking a final measurement.




Crelant 7G5V2 stock throw=37(one cell) 47(two cells)(second light did 54Kcd on two cells)

DX “A9” 13Kcd

SKU 80115477 Fandyfire 2 18650 53Kcd stock


SKU 80100448 UniqueFire UF-2190 Single 18650 XM-L 24Kcd stock


Eastward YJ XM-L JO6 single 18650 Stock throw 20Kcd/modded OEM XM-L 28Kcd


Eastward YJ single 18650 XM-L T-6 3.6-4.2V Stock throw 25Kcd

Romisen RC-29 Q5 Single AA or 14500 Adjustable focus. 14Kcd stock XR-E ez900

Small Sun ZY-T620 XML 2 18650 Stock throw of 41Kcd

Original DEFT 150Kcd

DEFT FTP 130Kcd

DEFT Enthusiast 175Kcd

DEFT edc 40Kcd

DEFT edc LR 60Kcd

DEFT edc LR+ 72Kcd

DEFT edc Enthusiast 85Kcd


Lights below this line are known to be tested on the latest setup. I believe the numbers below to be slightly more conservative than the above numbers but have no way of knowing absolutely as the previous meter died from years of testing :) The new meter and setup is what I refer to as "protocol C" which can be seen on the Certification cards supplied with OMG Lumens and some OneStopThrowShop products.

-----------------------------------------------------------------------------------------------

DX SKU: 121485 Labeled simply as “CREE” with clip. Stock throw of 13Kcd /Modded 29Kcd

Small Sun ZY-C10-S Stock 56Kcd Modded throw 107Kcd

Surefire UB3T Invictus Manufacturer Spec 30.5Kcd- OMG Spec 30.9Kcd

Maglite XL50 Manufacturer claimed ANSI 5232Kcd- OMG speced at 4.1Kcd(measured using LSD NiMh fresh off charger)

Maglite MiniMaglite 2AA LED Manufacturer claimed ANSI 4.99Kcd- OMG Speced at 6.4Kcd
(measured using LSD NiMh fresh off charger)

Coleman Max adjustable beam ANSI spec on package 3.9Kcd- OMG Speced at 5.6Kcd(measured using LSD NiMh fresh off charger)

Stanley FatMax “LEDLIS” W/ 3” diameter reflector- Claimed ANSI Spec 100.267Kcd- OMG Speced at 84.5Kcd

Fandyfire STL-V6 Stock throw 50Kcd- modded 117Kcd± 7

Klarus RS11 7200cd is the maufacturer ANSI spec-OMG Spec 8.1Kcd

Fenix TK41 early version not U2 XM-L Manufacturer lists 55,746cd as ANSI spec. - OMG measured 50Kcd stockwith supplied batteries.

Niteye EYE-30 28Kcd stock

TrustFire X6 SST-90 49Kcd stock/Modded with U2 XML direct to copper=275Kcd

L3 Illumination K40 99Kcd

SupBeam K40 95Kcd

Dereelight Xsearcher XML 2MT-M 102Kcd stock /modified with XPG2 gave 284Kcd /Got 370Kcd with the XPE2/ 182Kcd when the stock EZ900 pill from the Night Master was used.

Dereelight Nightmaster XRE 900ez 2MT-M 108Kcd stock /modded with xpe2 214Kcd

Dereelight Nightmaster Red XPE
2MT-M OMGspec 24Kcd with one 18650, 26.4Kcd with two CR123

Dereelight Nightmaster Green XPE 2MT-M OMG spec37.2Kcd with one 18650, 58.4Kcd with two CR123

FenixTK70 stock throw 114Kcd

Thrunite TN30 stock throw 41Kcd”neutral white version”

OMG Lumens DEFT-X 900Kcd

OneStopThrowShop TN31 XML version 242Kcd/ TN31mb XPG2 version 400Kcd (Stock Thrunite TN31 123Kcd)


OLight SR95S UT Manufacturer spec 250Kcd- OMG spec 269Kcd

Nitecore EA4 Pioneer Claimed ANSI 20Kcd OMG Speced at 19.7Kcd(tested with NiMH batteries)





I will attempt to keep this post updated as more lights are tested. If you have a light you'd like tested feel free to send it my way after checking with me first.
 
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saabluster

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Thanks guys. Just added one more and it's a biggie. Literally. The Olight SR95S UT. Manufacturer rates it as 250Kcd. I measured my sample at 269Kcd.
 

saabluster

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Main post updated.


Nitecore EA4 Pioneer Claimed ANSI 20Kcd OMG Speced at 19.7Kcd (tested with NiMH batteries)

Dereelight Nightmaster Red XPE 2MT-M OMGspec 24Kcd with one 18650, 26.4Kcd with two CR123

Dereelight Nightmaster Green XPE 2MT-M OMG spec37.2Kcd with one 18650, 58.4Kcd with two CR123
 

Colonel Sanders

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"Dereelight Xsearcher XML 2MT-M 102Kcd stock /modified with XPG2 gave 284Kcd /Got 370Kcd with the XPE2/"

So it would seem that the XP-E2 is worth about 30% throw over the XP-G2. Interesting. :thinking: Something tells me we may see an XP-E2 make it's way into a DEFT-X at some point.
 

Alex1234

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Dereelight Xsearcher XML 2MT-M 102Kcd stock /modified with XPG2 gave 284Kcd /Got 370Kcd with the XPE2/ 182Kcd when the stock EZ900 pill from the Night Master was used.

I see you got 182k with the stock ez900 led in the xsearcher. i dedomed my ez900 led and the throw has increased by a lot with a warmer color. im not sure if you measuered a dedomed ez900 in Xsearcher before but could you give a guess of what kind of lux im getting?
 

saabluster

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I see you got 182k with the stock ez900 led in the xsearcher. i dedomed my ez900 led and the throw has increased by a lot with a warmer color. im not sure if you measuered a dedomed ez900 in Xsearcher before but could you give a guess of what kind of lux im getting?
Well that would be the very definition of a pencil beam;) That said I'd guess it would be somewhere between 350 and 400Kcd.
 

LuxLuthor

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When you get a chance, I would be interested in what your testbed setup looks like. In particular, which model of Photometer used, if it is calibrated for Photopic CIE standard, how you make a valid adjustment for various LED wavelengths, etc. For others reading my query, this quick PDF gives some background on why this is an important issue, yet rarely is discussed. Suffice it to say that the more accurate method is to use a spectroradiometer....except for the $$$.
 

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