Olight M2X-UT Javelot (XM-L2 dedome, 1x18650/2xCR123A) Review: BEAMSHOTS, RUNTIMES+

selfbuilt

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Warning: pic heavy, as usual. :whistle:

M2XUT007.jpg

M2XUT006.jpg

M2XUT024.jpg


The M2X-UT Javelot from Olight represents a significant departure for a mass-market flashlight; this model features a stock dedomed emitter. :eek:oo:

All LED emitters feature a clear dome covering. This provides protection for the emitter, and helps even out the beam profile (especially in regards to tint). However, this also reduces the ability to focus light from the emitter, as it effectively moves the emitting surface from the die to the surface of the dome. As enthusiasts have long noted, dedoming the emitter drastically improves the ability of a reflector to focus the light for peak distance throw.

Although there are number of custom modders that offer dedoming services, this is the first time I've seen a major manufacturer release a dedomed light straight from their factories. As I don't know whether Olight is doing the dedoming (or custom ordering these from Cree), I will refer to this light as a "stock dedome" (i.e., "factory dedome" is a little imprecise, as I don't know which factory is doing the dedoming).

Let's see how the M2X-UT compares to other thrower lights, including a number of modded dedomes in my collection. :wave:

Manufacturer/Dealer Reported Specifications:
(note: as always, these are simply what the dealer/manufacturer provides – scroll down to see my actual testing results).

  • LED: CREE XM-L2
  • Runs on: 2x CR123A or 1x 18650 (Batteries NOT included)
  • Output mode/Runtime: High: 1020 lumens / 1hrs, Mid: 250 lumens / 3hrs, Low: 20 lumens / 30hrs
  • Peak Beam Intensity: 164,000cd
  • Max Beam Distance: 810 meters
  • Forward Tactical Click Switch for easy on/off and momentary function
  • Easy user interface, change modes by rotating the head
  • Smooth reflector providing perfect beam with exceptional throw
  • Intelligent temperature control system to prevent overheating
  • Anti-slip knurling for excellent grip
  • Reverse polarity protection to prevent improper battery installation
  • Toughened ultra-clear mineral glass with anti-scratch coating
  • Constructed from aero grade aluminum alloy
  • HA III military grade hard-anodized finish
  • Impact resistant to 1 meter (3.3 ft)
  • Waterproof in accordance with IPX-8 standards (up to 2 meters)
  • Dimensions: Length: 6.4" (163mm), Bezel Diameter: 2.5" (63mm), Body Diameter: 1" (25.4mm)
  • Weight: 7.7 oz (218g) (excluding batteries)
  • Included Accessories: holster, battery magazine, lanyard, and spare O-rings
  • MSRP: ~$110
M2XUT005.jpg

M2XUT004.jpg

M2XUT002.jpg


Like most recent Olight lights, you have the choice of a hard cardboard box or presentation-style plastic carrying case. Inside the presentation case, the light and all accessories are carefully packaged in cutout foam. Included with the light is a sturdy belt holder, spare O-rings, good quality wrist lanyard, 2xCR123A battery carrier, warranty card and manual.

M2XUT039.jpg

M2XUT034.jpg

M2XUT032.jpg

From left to right: Keeppower Protected 18650 3100mAh; Olight M2X-UT, M3X (L2); Eagletac S200C2vn; Olight SR52vn.

All dimensions directly measured, and given with no batteries installed (unless indicated):

Olight M2X-UT: Weight: 218.6g, Length: 163mm, Width (bezel): 47.0mm

1x 18650 lights:

Eagletac S200C2vn (V54 mod): Weight: 168.7g, Length: 155.0mm, Width (bezel): 62.3mm
Eagletac G25C2-II: Weight 141.0g, Length: 150.6mm, Width (bezel): 39.6mm
Eagletac TX25C2: Weight 93.6g, Length: 120.4mm, Width (bezel): 31.6mm
Nitecore SRT7: Weight: 172.4g, Length: 158mm, Width (bezel): 40.0m
Olight M22: Weight: 148.4g, Length: 144.8mm, Width: 41.2mm (bezel)
Zebralight SC600 II: Weight 79.3g, Length: 101.8mm, Width (bezel) 29.7mm

2x 18650 lights:
ArmyTek Barracuda: Weight 400.8g, Length 264mm, Width (bezel): 64.0mm
Eagletac GX25L2: Weight: 198.3g (with battery pack: 290.1g), Length: 224mm, Width (bezel): 39.5mm
Eagletac GX25L2 Turbo: Weight: 320.7g (with battery pack: 412.5g), Length: 251mm, Width (bezel): 62.0mm
Olight M3X no Extender: Weight: 260.9g, Length 211mm, Width (bezel): 62.3mm
Olight M3X with Extender: Weight 277.8g, Length 244mm, Width (bezel): 62.3mm
Olight SR52vn: Weight: 401.1g (501g with 6xCR123A), Length: 162mm, Width (bezel): 63.1mm
Thrunite Catapult V5: Weight: 556.7g, Length: 266mm, Width (bezel) 59.1mm

3x/4x 18650 lights:
Fenix TK61: Weight: 605.7g (790g with 4x18650), Length: 218mm, Width (bezel): 96.0mm
Niwalker BK-FA01 (XM-L2): Weight: 682.3g (864g with 4x18650), Length: 209mm, Width (bezel): 80.0mm, Width (tailcap): 50.3mm
SupBeam K50: Weight: 645.0g, Length: 230mm, Width (bezel): 90.1mm
Thrunite TN32 (XM-L2): Weight: 655.9g (808g with 3x18650), Length: 201mm, Width (bezel): 79.0mm

M2XUT011.jpg

M2XUT010.jpg

M2XUT013.jpg

M2XUT008.jpg

M2XUT012.jpg


Physically, the build of the M2X-UT is very similar to my Olight M21-X, M22 and M3X models – but there are some interesting differences. Anodizing is a matte black finish, hard anodized (i.e., type III) on all lights. Body labels are bright and clear, and relatively minimal. Overall external styling of the body handle is identical across the models, with the classic Olight raised checkered pattern (which replaces actual knurling, to help with grip).

There are two external styles to the tailcap, with the M2X-UT matching the appearance of my M3X (i.e., fluted ridges instead of the checkered pattern). Like the M3X, the M2X-UT can tailstand (not offered on the M21-X/M22 tailcaps). However, screw threading of the M2X-UT matches the M21-X/M22 models, and not the M3X. As a result, you can't use the battery extender of the M3X on the M2X-UT. Screw threads are anodized on all lights, for tail lock-out.

Styling of the head of the M2X-UT is very similar to the M3X, just not quite as deep. The screw threads are identical in the head region between the M3X and M2X-UT, and feature a standard triangular cut. This is different from the square cut on the M21-X and M22. As a result, you could swap the heads between the M2X-UT and M3X, but not with the M21-X/M22. This could be useful if you wanted to try out the 2x18650-sized body/tailcap of the M3X on the M2X-UT head. :whistle:

As with other models, there is a spring mounted on the positive contact board in the head, so flat-top cells can be used In the light.

The bundled cigar grip ring is made of metal, like the other models. However, the M2X-UT lacks the groove intended to fit a pocket clip. Due to overall dimensions of the M2X-UT (i.e., a large head and small body), a pocket clip would not make a lot of sense.

The M2X-UT uses a forward clicky switch, which similar feel to all the other models.

M2XUT009.jpg

M2XUT014.jpg

M2XUT024.jpg


This clearly isn't your standard XM-L2 emitter. ;) However Olight has managed to obtain dedomed emitters, my sample looks perfect – there is no sign of damage or left-over residue from the dome. This makes me think they are either getting these "factory" dedomed by Cree, or have a found a very good process to automate dedoming in their own hands.

I would expect outstanding throw performance, consistent with other dedome lights. Scroll down for beamshots. :wave:

User Interface

User interface is basically the same as the M22. Turn the light on/off by the tailcap forward clicky switch (press for momentary, click for locked-on).

There are three main output levels controlled by a loosen/tighten of the head. Mode sequence is Lo > Med > Hi, in a repeating loop. The light has mode memory, and retains the last level set when you turn it off and back on.

From off, a double-click or double-half-press of the tailcap switch jumps you to Hi, no matter what mode the light was memorized in. A triple-click/triple-half-press of the switch jumps you to Strobe. There is no memory for the special multiple-click states of the light.

Video:

For more information on the overall build and user interface, please see my video overview:



As with all my videos, I recommend you have annotations turned on. I commonly update the commentary with additional information or clarifications before publicly releasing the video.

As an aside, if you want to get an instant notification for every new review that I post here on CPF, you can subscribe to my YouTube channel (the vids go public at the same time). Just mouse over my logo watermark on the top right-hand corner of the video for the subscribe feature to open up. You may need to tap or click, depending on the platform you are using to watch. :wave:

PWM/Strobe

As always, there is no sign of PWM (pulse width modulation) at any output level – the M2X-UT is current-controlled like its predecessor Olight models. :)

M2XUT-Strobe.gif


The strobe is a fairly typical fast "tactical" strobe, of 9.7Hz frequency (as on the M22).

No Standby Drain:

Thanks to the physical forward clicky switch, there is no standby drain when off.

Beamshots:

For white-wall beamshots below, all lights are on Max output on an protected 18650 batteries. Lights are about ~0.75 meter from a white wall (with the camera ~1.25 meters back from the wall). Automatic white balance on the camera, to minimize tint differences.

I will compare the M2X-UT to several different classes of "thrower" lights below.

Dedome emitter comparisons:

M2XUT-Beam001.jpg
S200C2vn-Beam001.jpg

SR52vn-Beam001.jpg
K50vn-Beam-001.jpg


M2XUT-Beam002.jpg
S200C2vn-Beam002.jpg

SR52vn-Beam002.jpg
K50vn-Beam-002.jpg


M2XUT-Beam003.jpg
S200C2vn-Beam003.jpg

SR52vn-Beam003.jpg
K50vn-Beam-003.jpg


M2XUT-Beam004.jpg
S200C2vn-Beam004.jpg

SR52vn-Beam004.jpg
K50vn-Beam-004.jpg


Comparison to stock XM-L2, 2x18650 lights:

M2XUT-Beam001.jpg
M3X-XML2--Beam001.jpg

CatV5-Beam001.jpg
Barracuda-Beam001.jpg


M2XUT-Beam002.jpg
M3X-XML2--Beam002.jpg

CatV5-Beam002.jpg
Barracuda-Beam002.jpg


M2XUT-Beam003.jpg
M3X-XML2--Beam003.jpg

CatV5-Beam003.jpg
Barracuda-Beam003.jpg


M2XUT-Beam004.jpg
M3X-XML2--Beam004.jpg

CatV5-Beam004.jpg
Barracuda-Beam004.jpg


Comparison to stock XM-L2, 3x/4x18650 lights:

M2XUT-Beam001.jpg
TN32-Beam001.jpg

BKFA01-Beam001.jpg
TK61-Beam001.jpg


M2XUT-Beam002.jpg
TN32-Beam002.jpg

BKFA01-Beam002.jpg
TK61-Beam002.jpg


M2XUT-Beam003.jpg
TN32-Beam003.jpg

BKFA01-Beam003.jpg
TK61-Beam003.jpg


M2XUT-Beam004.jpg
TN32-Beam004.jpg

BKFA01-Beam004.jpg
TK61-Beam004.jpg


OK, that's a lot of comparisons. :sweat:

As you can see above, the M2X-UT is an outstanding thrower for its size. Since dedoming reduces the effective surface area for focusing, you get a smaller and further throwing hotspot on the M2X-UT than you would expect from a dome-on emitter with this size reflector.

It also produces the typical green-yellow tint shift seen on custom mod dedome jobs. As always, it is not quite as green looking in real life as these pics seem to show – I find the automatic white balancing on the camera tends to enhance the green appearance somewhat.

You will also notice that the M2X-UT spillbeam is slightly wider than most lights in the 1x18650 size – although is very consistent with the M3X. There does seem to be a bright secondary ring around the hotspot on my sample (i.e, an artifact). It is also common to see a center-beam "donut effect" at really close distances, due to the distance focusing.

The other thing you might notice is that the M2X-UT can easily hold its own against even the largest stock dome-on XM-L2 lights (i.e., the last set of comparisons above). Scroll down for exact beam measures, but the M2X-UT is currently the furthest throwing "stock" XM-L2 light in my collection. :whistle:

Since you can't really only tell so much from these standardized up-close beamshots, let's move on to my basement. For your reference, the back of the couch is about 7 feet away (~2.3m) from the opening of the light, and the far wall is about 18 feet away (~5.9m). Below I am showing a couple of exposures, to allow you to better compare hotspot and spill.

For these comparisons, I am just focusing on some of the custom dedomed competition (since the M2X-UT out-throws all the dome-on competition).

M2XUT-S200C2vn-SR52vn-Beam25.gif


M2XUT-S200C2vn-SR52vn-Beam100.gif


M2XUT-S200C2vn-SR52vn-Beam800.gif


The M2X-UT has a fairly tightly focused hotspot, with relatively little corona. Note that my S200C2vn sample uses a dedomed XP-G2, so is capable of even tighter focusing (but has less output). Even if you had the higher output dedomed XM-L2 version, I would still expect the M2X-UT to out-throw it, thanks to its larger reflector.

Unfortunately, it is the middle of winter here, so I am afraid outdoor beamshots will have to wait. :shrug:

Testing Method:

All my output numbers are relative for my home-made light box setup, as described on my flashlightreviews.ca website. You can directly compare all my relative output values from different reviews - i.e. an output value of "10" in one graph is the same as "10" in another. All runtimes are done under a cooling fan, except for any extended run Lo/Min modes (i.e. >12 hours) which are done without cooling.

I have devised a method for converting my lightbox relative output values (ROV) to estimated Lumens. See my How to convert Selfbuilt's Lightbox values to Lumens thread for more info.

Throw/Output Summary Chart:

My summary tables are reported in a manner consistent with the ANSI FL-1 standard for flashlight testing. Please see http://www.flashlightreviews.ca/FL1.htm for a discussion, and a description of all the terms used in these tables. Effective July 2012, I have updated all my Peak Intensity/Beam Distance measures with a NIST-certified Extech EA31 lightmeter (orange highlights).

For these tables, I thought I would show a comparison to both the 1x18650 class, the multiple 18650 class …

M2XUT-FL1-Summary1.gif


M2XUT-FL1-Summary2.gif


First thing to note above; my NIST-calibrated light meters reports even higher peak intensity throw for the M2X-UT than the Olight specs indicate (i.e., 196,000cd on my sample, vs 164,000cd spec). :eek:oo:

These is very consistent with the beamshots, and shows that my M2X-UT sample out-throws the stock Fenix TK61, Niwalker BK-FA01 or Thrunite TN32 (although that last one is too close to call in practice).

To compare it to the custom dedome mods, the stock M2X-UT beats out my Vinh Nguyen S200C2vn XP-G2, and is pretty close to the SR52vn. Of course, the much larger (and more heavily driven) K50vn and TK61vn throw much further.

Let's see how the output levels compare to the official specs in my testing:

M2XUT-Lumens-1.gif


As always, my estimated lumens are very close to the published Olight specs. :)

Output/Runtime Graphs:

Previously, I used to use AW 2200mAh protected cells in my 18650 testing (for their excellent consistency and ability to fit and work in any light). After considerable testing, I have switched to a few of brands of protected NCR18650A cells (3100mAh capacity). I have found a few brands that show good correlations and internal consistency, and that collectively can fit and work in all of my lights. I have now moved to using 3100mAh cells in all my 18650-class reviews. :wave:

As always, my standard runtimes are done under a cooling fan. For these comparisons, I am sticking with other 1x18650-class lights (since nothing else would be fair).

M2XUT-Hi3100.gif

M2XUT-Med3100.gif


M2XUT-HiRCR.gif


I've added AW unprotected 18350 results to the 2xRCR graph above, given the ability of the body to accommodate.

M2XUT-HiCR123.gif


Regulation pattern is good, with relatively flat stabilization overall and a drop-off period before the batteries are exhausted. The M2X-UT actually steps down to the Lo level for a few mins before the batteries die completely.

On Hi, the light starts to step-down in output beginning at 3.5 mins into the run, and levelling off after 2 mins at a reduced max output. This is gradual enough for you not to notice – and you can always click off/on to restore initial max output.

Overall, the M2X-UT performs like a good current-controlled light. I note that output/runtime efficiency seems to be just a slight bit lower than most of the dome-on competition. This is likely a consequence of the dedoming – I have previously noticed that dedoming can effectively reduce the overall output of a light. I am not quite sure why that is the case, but it may have to do with beam losses in the optics being different for heavily focused lights. Or my lightbox/ceiling bounce sensitivity may be off slightly for heavy throwers – it's hard to know for sure. Either way, it is a fairly minor effect – at worse, think of it like dropping down an output bin or two for a classic dome-on emitter.

Potential Issues

The M2X-UT has a much larger head than typical for a 1x18650 light, making it more difficult to easily carry. You'll note a pocket clip is not provided, for obvious reasons.

Loosen/tighten head twists are required to change output modes (i.e., needs two hands).

Dedomed emitters have a warmer overall beam tint – typically green-yellow, as seen here.

Long-term stability of dedomed emitters (compared to standard dome-on ones) is unknown, but I would not expect any significant issues from a stock dedome such as this. There is no sign of residue or damage from the dedoming process on my sample.

There is a timed step-down feature on Hi, but this is gradual.

Preliminary Observations

Despite its relatively small size, the M2X-UT is the furthest throwing stock XM-L2 light I've tested to date. :eek:oo: It's incredible to see a light this size matching or exceeding heavy throwers like the Thrunite TN32 and Fenix TK61.

The M2X-UT manages this feat thanks to the stock dedomed XM-L2 emitter. I'm not sure how Olight is getting these emitters sans-dome, but I expect there is some sort of custom production run being done (i.e., I don't see any signs of a messy removal). But of course, the true comparables for this light are the dedome models available from a number of custom modders here. In that sense, the dedomed SR52vn from Vinh Nguyen is probably the closest match in terms of raw throw and beam profile.

As always, all dedomed emitters are somewhat green-yellow tint-shifted. How much is variable, but it is certainly noticeable on my M2X-UT sample. If you very sensitive to tint, you may want to stick with a custom modder who can bin lights into specific tint ranges. But all dedome lights will be warmer than standard cool white. You can also expect to see some artifacts in the beam, including a "donut hole" hotspot at close distances (i.e., these lights are focused for distance throw).

Build-wise, the M2X-UT is very similar to the earlier M22 and M3X lights from Olight. In some ways, it is sort of a build hybrid between those two models. Circuit performance is very good for the class.

One thing that I am glad to see now is the timed step-down on Turbo. I know timed step-downs are not popular here, but the sustained Hi mode on the original M3X could lead to primary CR123As overheating and tripping their PTC safety circuits. You can always manually restart the M2X-UT on Hi to restore initial max output.

The M2X-UT is an easy way for those curious about dedomed lights to dip a toe in the water, so to speak. Here, you get an excellent throwing light with full manufacturer's warranty. If you are looking for even greater output/throw (or more consistent tint), there are always the custom mod jobs to consider. But if you like the standard build and interface of the 1x18650/2xCR123A Olight M22, this is a way to get basically the same light in a throw monster form. :wave:

----

M2X-UT was provided by GoingGear.com, on behalf of Olight, for this review.
 
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kj2

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Thanks for the review :) Have compared the M2X-UT and TK61, and my samples are quite equal in throw. Of course, the TK61 has a much whiter tint, than the M2X-UT
 

selfbuilt

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Thanks for the review :) Have compared the M2X-UT and TK61, and my samples are quite equal in throw. Of course, the TK61 has a much whiter tint, than the M2X-UT
Yes, you can see the same in my summary tables - the stock TK61, TN32 and M2X-UT are all very similar in peak beam intensity measures (although my M2X-UT sample did squeak out ahead slightly).
 

NoNotAgain

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Selfbuilt,

One of your charts lists Nitecore ANSI lumens.

M2XUT-Lumens.gif


Since ANSI is a standards organization, shouldn't it be ANSI lumens not Nitecore?

I've also got both the M2X-UT and the TK61. The hotspot on the M2X-UT is much clearer defined than the TK61. In my field use, the M2X-UT provides a beam more usable for distant objects than the TK61. Out to about 200 yards real life the TK61 wins the battle due to the spill light produced.
 

Wiggle

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Nice review! It looks like this light could fill a nice gap between my Armytek Predator (37 kcd) and K50vn (450+ kcd) and the size is much closer to the Armytek (/w larger head of course). I hope we see more factory de-domed lights. Amazing performance for 1x18650. We went from sub 40 kcd to almost 200 kcd with this light alone. AFAIK there are no lights occupying that vast difference in between in 1x18650 format.
 
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Capolini

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Awesome review SB. I like how you compared the SR52vn and the S200C2vn! :twothumbs I have both those modded Vihn lights and decided to turn the M2X into a M2Xvn!!

Stock is very impressive in of itself!

Wow! you got 196Kcd from the stock version. I believe it which makes me believe the Modded version I have is ~280/300Kcd for sure!
___________________________________________________________________________________________________________

Below are Outdoor beam shots that Vihn took of a Stock M2X on left and My light,M2Xvn direct drive single mode XML2-U3 before he shipped it to me!!

DSC_2020_zpse39491d4.jpg

M2X Stock VS M2Xvn W/ U3 PDTc Direct Drive (Both 4 mode driver and single mode only are direct drive)
 

selfbuilt

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Since ANSI is a standards organization, shouldn't it be ANSI lumens not Nitecore?
Oops, that should have said Olight (fixed). In these tables, I am referring to fact that the manufacturer specs are reported according to the ANSI FL-1 flashlight standard (in this case, with max output between 30 secs and 2mins after activation, as explained in the legend). This is to differentiate from manufacturers who report specs in other ways (i.e., emitter/LED lumens, or output at time of activation, etc.).

But also to make clear that these are still manufacturer specs - there is no independent third party source for these numbers, they come from the manufacturers themselves (who are supposedly sending out samples for ANSI FL-1 testing).

AFAIK there are no lights occupying that vast difference in between in 1x18650 format.
Yes, it does change the playing field quite a bit for 1x18650.

Awesome review SB. I like how you compared the SR52vn and the S200C2vn! :twothumbs I have both those modded Vihn lights and decided to turn the M2X into a M2Xvn!! Stock is very impressive in of itself!
Yes, I'm not surprised that Vinh's signature current boost would improve the throw as demonstrated in that pic. At least it saves him from having to dedome. :laughing:
 

Capolini

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SB,,,,,,,,,,,Your statement below is absolutely correct!:D

However, screw threading of the M2X-UT matches the M21-X/M22 models, and not the M3X. As a result, you can't use the battery extender of the M3X on the M2X-UT. Screw threads are anodized on all lights, for tail lock-out.
_________________________________________________________________________________________________

As you see in my photo, the ENTIRE Body tube of the M3X works when screwing into the M2X head! I found out they were exchangeable/compatible through tiresome experimentation! :eek:oo: The switches/ tail caps must be identical because the M2X operated exactly the same w/ the M3X "BODY TUBE".



M3X BODY W/ M2X HEAD. IT IS ALMOST 1" SHORTER THAN M3X BECAUSE OF THE SMALLER LENGTH OF THE M2X HEAD!. M3X HEAD NEXT TO IT.

011_zps89f47ee6.jpg

 
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NoNotAgain

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The M3X battery extender tube by itself, the piece approximately 1 1/2" long can't be screwed onto the M2X-UT battery tube due to the difference in threading. I believe that's what Selfbuilt was referring to, but I could be wrong. This extender tube allows the M3X to use 4 CR123 or two 18650 cells, insted of using 3 CR123 cells.

The entire battery tube from the M3X can be used with the M2X-UT light.
 

fcbrian

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Great Review, and thank you Selfbuilt. I was "waiting" for a review,but my finger accidentally hit the "buy now" button :rolleyes:. I recieved mine yesterday. Yes, I'm on a bit of a binge in the last couple weeks(K40M, TK61, M2X):shrug:

It was snowing quite hard last night but still lit up my snow covered 130 yard target berm quite nicely. I could see the 200yd and farther as well, but again, it was snowing pretty good and large flakes, so all in all I'm impressed. Side by side with the TK61, obviously the 61 has larger hotspot, but the throw of the M2X was right there.

I'm not crazy about the UI, especially for the wife. But she has her choice now.

I think this light would?will make a great weapon light, even with the large diameter reflector. Great for any type of night hunting.

Now I can't wait for the M3X to come to market, but I'll wait for the price to settle down.

On a side note, I saw all different pricing and battery combos. . I paid 110 on amazon and it came with an olight 3200 1650 in the plastic display case.

Thanks again,

Brian
 

Capolini

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The M3X battery extender tube by itself, the piece approximately 1 1/2" long can't be screwed onto the M2X-UT battery tube due to the difference in threading. I believe that's what Selfbuilt was referring to, but I could be wrong. This extender tube allows the M3X to use 4 CR123 or two 18650 cells, insted of using 3 CR123 cells.

The entire battery tube from the M3X can be used with the M2X-UT light.

Right! That is exactly what he said and then I demonstrated what I discovered! :cool:
 

RemcoM

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Jan 14, 2012
Messages
631
Hi all,

My Olight M2x, is measured-tested at 180 kcd.

So, well overpowered. A real dedomed light. Sort of a real vinh light.

This is a real monster, like my Nitecore TM36, but in a very small package.

Like a mini TK61vn, and yes, it outthrows my TK61 stock, with ease.

Extremely happy, with this wonderfull mini monster-ultrathrowerlight.
 

selfbuilt

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I believe that's what Selfbuilt was referring to, but I could be wrong. .. The entire battery tube from the M3X can be used with the M2X-UT light.
Right! That is exactly what he said and then I demonstrated what I discovered! :cool:
Yes indeed, that is what I meant - as shown in Capolini's pic.

It's interesting to me that the M2X-UT's tailcap has the external styling of the M3X tailcap, but the interior threading of the M22 tailcap. This means that you need both the body tubes and tailcap from the M3X to extend the M2X-UT. Not sure why it was set up this way, but at least it means that M3X owners can have some fun experimenting with head swapping.

It was snowing quite hard last night but still lit up my snow covered 130 yard target berm quite nicely. I could see the 200yd and farther as well, but again, it was snowing pretty good and large flakes, so all in all I'm impressed. Side by side with the TK61, obviously the 61 has larger hotspot, but the throw of the M2X was right there.
Yes, throw lights can look quite interesting in snow storms - definitely handy things to have around.

And a belated :welcome:

Like a mini TK61vn, and yes, it outthrows my TK61 stock, with ease.
That's a good description. I originally thought the S200C2vn would be a good mini TK61vn. But the M2X-UT is an even better contender for the title, since it is bound to be the best throwing reflectored 1x18650 light (especially if current-boosted by Vinh).
 

RemcoM

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Yes indeed, that is what I meant - as shown in Capolini's pic.

It's interesting to me that the M2X-UT's tailcap has the external styling of the M3X tailcap, but the interior threading of the M22 tailcap. This means that you need both the body tubes and tailcap from the M3X to extend the M2X-UT. Not sure why it was set up this way, but at least it means that M3X owners can have some fun experimenting with head swapping.


Yes, throw lights can look quite interesting in snow storms - definitely handy things to have around.

And a belated :welcome:


That's a good description. I originally thought the S200C2vn would be a good mini TK61vn. But the M2X-UT is an even better contender for the title, since it is bound to be the best throwing reflectored 1x18650 light (especially if current-boosted by Vinh).

When i shine around, with my Olight M2X/UT, on a summer day, with full sun, and blue sky, at turbo....180 kcd, can i see it then, from 100 meters distance=

Is the light then visible, or not=

2 Will 180-200 kcd 180000 200000 cd, be visible, on a dark afternoon, completely overcast sky, in midwinter, at a distance of 100 meters, at 15 minutes before sunset=

3 What is the cd number, of the low, and midmode of the M2X/UT....can that be calculated
 

selfbuilt

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When i shine around, with my Olight M2X/UT, on a summer day, with full sun, and blue sky, at turbo....180 kcd, can i see it then, from 100 meters distance=
Is the light then visible, or not=
That depends what you mean. If you mean: can I see the effect of the beam at 100m distance on some object illuminated in full overhead sun, then the answer is definitely no. If you mean: could I tell looking directly at the M2X-UT at 100m distance if the light is on or not (with the light shining on your eyes), then the answer depends on the ambient light levels (although is likely no in most cases).

The reason for this is that a 180,000-200,000cd light will put only 18-20 lux on a target at 100m. If that target is illuminated in full sun (and thus receiving up to 100K lux), the effect of an extra measly 20 lux will not be noticeable. For example, 88,740 lux looks exactly the same as 88,760 lux to any observer - you cannot discriminate that sort of difference.

However, assuming you are not looking directly into the sun, then you may be able to discriminate whether the light is on by looking at it (i.e., having in shone in your eyes). A sunny day is typically 10K-20K lux background illuminance (assuming not in direct sunlight) - so I doubt you will be able to see the extra 18-20 lux on top of that. A typical overcast day is more like 1K lux - so you may be able to tell the flashlight is on (i.e., 1020 lux may be discernible against 1000 lux), but I tend to doubt it.

2 Will 180-200 kcd 180000 200000 cd, be visible, on a dark afternoon, completely overcast sky, in midwinter, at a distance of 100 meters, at 15 minutes before sunset=
Again, same as above - it all depends on what level of background illuminance we are really talking about. A very dark and overcast day can be as low as 100 lux ambient illumination - you should be able to tell the difference between 120 and 100 lux at 100m (although it won't be huge). A sunset on a clear day is about 400 lux illuminance ... don't know what it is like "15 mins" before though, on an overcast day.

Simply put, there is no way to fully answer such hypothetical questions. All you can do is run the math, and see if the result is likely to be discernible or not. And as you can tell, the answer is generally "no" in daylight.

3 What is the cd number, of the low, and midmode of the M2X/UT....can that be calculated
No, but it can be estimated by calculation. As a general rule, lux@1m (i.e., cd) correlates linearly with overall output. So if you know the lumen levels of all the modes, you can estimate what the cd will be.

Using the lumen estimates from my review, the Med mode is 280 lumens vs 950 lumens for the Hi mode. So the estimated cd of the Med mode is (280/950) * 196,000 = ~57,800cd. Similarly, the Lo mode is 20 lumens on my sample, giving you (20/950) * 196,000 = ~4,100cd.

Those numbers should not be considered exact, as there are measurement factors to consider. Specifically, the peak intensity is taken from the point of regional highest intensity, whereas the lumen output is taken from the overall amount of light emitted (i.e., it's a bit like comparing a peak to an average). As such, you would get a closer match if you compared the average hotspot intensity with the overall lumen numbers. But you can apply the general principle to any light and get a pretty good estimate.

For what it is worth, I have just gone and measured by M2X-UT (which gets 196,000 lux for peak beam intensity). On Med, I get a peak intensity of 59,000cd and on Lo I get 4,400cd. So, the estimation method works fairly well.
 
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RemcoM

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That depends what you mean. If you mean: can I see the effect of the beam at 100m distance on some object illuminated in full overhead sun, then the answer is definitely no. If you mean: could I tell looking directly at the M2X-UT at 100m distance if the light is on or not (with the light shining on your eyes), then the answer depends on the ambient light levels (although is likely no in most cases).

The reason for this is that a 180,000-200,000cd light will put only 18-20 lux on a target at 100m. If that target is illuminated in full sun (and thus receiving up to 100K lux), the effect of an extra measly 20 lux will not be noticeable. For example, 88,740 lux looks exactly the same as 88,760 lux to any observer - you cannot discriminate that sort of difference.

However, assuming you are not looking directly into the sun, then you may be able to discriminate whether the light is on by looking at it (i.e., having in shone in your eyes). A sunny day is typically 10K-20K lux background illuminance (assuming not in direct sunlight) - so I doubt you will be able to see the extra 18-20 lux on top of that. A typical overcast day is more like 1K lux - so you may be able to tell the flashlight is on (i.e., 1020 lux may be discernible against 1000 lux), but I tend to doubt it.


Again, same as above - it all depends on what level of background illuminance we are really talking about. A very dark and overcast day can be as low as 100 lux ambient illumination - you should be able to tell the difference between 120 and 100 lux at 100m (although it won't be huge). A sunset on a clear day is about 400 lux illuminance ... don't know what it is like "15 mins" before though, on an overcast day.

Simply put, there is no way to fully answer such hypothetical questions. All you can do is run the math, and see if the result is likely to be discernible or not. And as you can tell, the answer is generally "no" in daylight.


No, but it can be estimated by calculation. As a general rule, lux@1m (i.e., cd) correlates linearly with overall output. So if you know the lumen levels of all the modes, you can estimate what the cd will be.

Using the lumen estimates from my review, the Med mode is 280 lumens vs 950 lumens for the Hi mode. So the estimated cd of the Med mode is (280/950) * 196,000 = ~57,800cd. Similarly, the Lo mode is 20 lumens on my sample, giving you (20/950) * 196,000 = ~4,100cd.

Those numbers should not be considered exact, as there are measurement factors to consider. Specifically, the peak intensity is taken from the point of regional highest intensity, whereas the lumen output is taken from the overall amount of light emitted (i.e., it's a bit like comparing a peak to an average). As such, you would get a closer match if you compared the average hotspot intensity with the overall lumen numbers. But you can apply the general principle to any light and get a pretty good estimate.

For what it is worth, I have just gone and measured by M2X-UT (which gets 196,000 lux for peak beam intensity). On Med, I get a peak intensity of 59,000cd and on Lo I get 4,400cd. So, the estimation method works fairly well.

The M2X, as a bikelight is possible i think....only on the lowmode,

But what ..imagine, it driving with med......58000 cd, and high....180 kcd........not done, i think so, for who aimed it forward.
 

kj2

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May 22, 2010
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The M2X, as a bikelight is possible i think....only on the lowmode,

But what ..imagine, it driving with med......58000 cd, and high....180 kcd........not done, i think so, for who aimed it forward.

Much to intense, and will cause tunnel vision. Don't want that with a bike light. Recommend getting a proper bike light instead of mounting a flashlight.
 

selfbuilt

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Location
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The M2X, as a bikelight is possible i think....only on the lowmode,
Much to intense, and will cause tunnel vision. Don't want that with a bike light.
I agree with kj2, in terms of the M2X-UT. Even on low, the relative beam profile is far to focused. You really need a lot more peripheral spill when riding on a bike.

That said, prior to the introduction of dedicated bike lights in recent years from the main makers, I found most general purpose 1x18650 lights (with regular sized heads) seem to work pretty well. But I'll leave that to the night-time riders to discuss and advise. :wave:
 

RemcoM

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Jan 14, 2012
Messages
631
Much to intense, and will cause tunnel vision. Don't want that with a bike light. Recommend getting a proper bike light instead of mounting a flashlight.

Yes kj2,

Think i order a Fenix BC30, ideal bikelight i think.
 
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