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Thread: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

  1. #1

    Wink2 Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Warning: pic heavy, as usual.

    Manufacturer's specifications, condensed from Battery Junction’s website:
    • Luminus SST-50 LED
    • Powered by: 2 x CR123A / 2 x RCR123A / 2 x 16340 / 1x 18650 / 1 x 17670 batteries
    • Dimension: Length: 145.5mm (5.7”), Bezel Diameter: 40.2mm (1.6”), Body Diameter: 24.80mm (0.98”), Weight: 119g(4.2oz), Color: Black
    • Tactical momentary-on forward switch, protruding switch for easy momentary or click to lock on
    • Three digitally controlled constant brightness levels and strobe. 20lm (30hrs)-80lm (8hrs)-500 lm (1.2hrs), Strobe(500lm/2.4h).
    • Auto memorization of specific function for instant access
    • Front removable stainless steel striking bezel and rear striking bezel, removed for daily use, installed for close quarter combat
    • Ergonomic design with solid structure for easy operation, anti-slip body texture that give you a firm tight grip
    • Full orange peel reflector for wide flawless beam
    • Strong / quick to release lanyard to prevent loss and easy access
    • IP68 Water resistant
    • Anti-shattering ultra clear lens, anti-scratching and anti-slip
    • Metal ‘cigar hold’ ring optimally positioned offer additional anti-roll properties and is pre-installed but removable for smoother body hold
    • Stainless steel pocket clip
    • Operation: For momentary light, gently press (no click) the tailcap push-button switch. For constant light, fully press (click) the tailcap pushbutton switch.
    • To switch functions, click on the light, loosen the head by 1/8 of a circle and then tighten it down, the light will move to the next function. Repeat the same operation for further functions.
    • MSRP $120

    The M21 is the “sequel” to the highly popular Olight M20, reviewed over a year ago. How does it compare? Read on to find out …





    The M21 comes in a presentation-style plastic carrying case, similar to the M30. The light and all accessories are carefully packaged in cutout foam. Included with the light is a sturdy belt holder, spare O-rings, GITD tailcap button cover, good quality wrist strap, 2xCR123A battery carrier, tactical grip ring replacement cover, and manual.




    From left to right: Duracell CR123A, AW Protected 18650, D-mini VX Ultra with D65 extender, Olight M21, Olight M20, JetBeam Jet-IIIM, ThruNite Catapult (no extender)

    Olight M21: Weight 119.5g, Length 145.2mm x Width 38.5mm (bezel)
    Olight M20: Weight: 120.0g, Length 144.0mm x Width: 35.7mm (bezel)

    Overall size and weight of the M21 is similar to the older M20, although the head is just a bit wider and longer on the M21. But unless you are comparing the two side-by-side, for all intents and purposes the hand feel is very much the same. This is a high quality light that is comfortable to hold and use.



    Like the M20, all components seem sturdy and well built. Everything fits together well, with double o-rings and smooth screws threads at all openings (tailcap threads are anodized, allowing tailcap lockout). Tailcap spring is not exposed, but encased within an assembly with a button top. Note that the tailcap is interchangeable with my older M20 – nice to see they have kept the specs consistent for over a year! .

    There is a spring mounted on the positive contact board in the head, so recoil should not be a problem. And newer flat-top higher capacity 18650s should work fine.

    The bore width is good, so all batteries should fit. A battery magazine is supplied to help prevent rattle with 2xCR123A. Note that the magazine is optional, but if nothing else, it provides a good storage means for backup cells.

    Machining and anodizing of the light are top-notch on my sample. The raised checkered portions help with grip, though not as "grippy" as aggressive knurling. The attached anodized clip and grip ring also help enhance grip, and both are removable. Included in the kit is a smooth replacement cover for the grip ring (i.e. the grip ring screw threads would be exposed otherwise). Overall, I would have to say hand feel remains excellent in all configurations.



    The light can't tailstand - but that's not uncommon for "tactical" lights, since tailstanding rings tend to obstruct easy access to the clicky switch. Light comes with a forward tactical clicky with good tactile feel (momentary on, click for lock-on).



    The light features a scalloped stainless steel bezel ring, which could serve as a strike bezel. The Luminus SST-50 is clearly visible well centered in the reflector. The reflector is fairly heavily textured, which should provide a very smooth beam. Given the larger die of the Luminus LED, I do not expect it to throw as well as the original M20 (i.e. harder to focus to a fine point).

    And now for the requisite white wall hunting … all lights are on Max with OP reflectors on AW 18650, about 0.5 meters from a white wall.

    Note: the tint of the M21/M20 comparison pics is thrown off by the very green M20 - my M21 more closely matches the tint shown in the other light comparisons.













    The M20 has what I consider to be a very standard beam profile for a tactical light - moderate spillbeam, reasonably bright spill, strong hotspot with good throw. The M21 certainly carries on this tradition, with a slightly wider spillbeam and less focused hotspot, consistent with its emitter/reflector combination.

    Although hard to see above, the M21 has a fairly premium cool white tint. Early M20s tended to have R2s with the greenish WH cool white tint (which is throwing off my camera in the first set of comparisons). My ThruNite Catapult and Lumapower Dmini VX Ultra (both SST-50-equipped) tend to be just slightly on the purplish-side of premium white. For those of you not familiar with tint bins, please see my Colour tint comparison and the summary LED tint charts found here.

    Here are some close-ups at 5m to better show you the hotspots. Both lights on Max on 18650. The height of each image is ~1.25m.





    Pardon the spackle marks (this is from an unfinished part of my basement ). But as you can see, the M21's hotspot illuminates an area about twice as wide as the M20 at 5m. The width of the hotspot is about 1m wide for the M21, half-a-meter for the M20, at this distance.

    User Interface

    UI is identical to the M20, and very straight-forward - press the forward clicky for momentary on, click for lock-on.

    Light moves between modes by a simple switch of the head - loose/tighten the bezel to move to the next state. Sequence is: Lo - Med - Hi - Strobe, repeated in an endless loop. Light features mode memory, and retains the last setting used (so you can always have it come on where you want).

    There is no sign of pulse width modulation (PWM) on any output mode - I believe that the light is current controlled.



    Strobe is a fairly tactical (and certainly annoying) 9.5 Hz.

    Testing Method: All my output numbers are relative for my home-made light box setup, a la Quickbeam's flashlightreviews.com method. 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 the extended run Lo/Min modes (i.e. >12 hours) which are done without cooling.

    Throw values are the square-root of lux measurements taken at 1 meter from the lens, using a light meter.

    Throw/Output Summary Chart:







    As expected, the Max overall output of the M21 is higher than the original M20. The low-level is also slightly higher, but not significantly so. As predicted from the beam shots, center beam throw is indeed reduced on the M21 - but still quite acceptable for a general purpose/tactical light.

    Note that my lightbox seems to be underestimating the relative output of the M21 compared to the other lights (the ceiling bounce results suggest the M21 is actually ~40% brighter than the M20 on max).

    Output/Runtime Comparison:

    Note: Effective January 2010, all CR123A runtimes are now performed solely on Titanium Innovations batteries. You can compare the generally excellent performance of these CR123A cells relative to the Duracell/Surefire cells used in all my earlier reviews here. I have marked all the new runtimes of lights with Titanium Innovations CR123As on the graphs with an "*".



    Taken in isolation, the runtimes on all batteries seem reasonable and consistent with what I would expect. Note that like the M20 (and many other multi-power lights), the M21 bypasses the protection circuit cutoff on 18650 batteries. You should stop any run on 18650 once the light begins to dim noticeably, to insure you don't over-discharge your batteries.










    The SST-50-equipped M21 is definitely brighter on Max than any of the single-die Cree lights, but the difference is not as high as you might expect (~25% according to my lightbox, ~40% according to ceiling bounce). The Lumapower Dmini VX Ultra and ThruNite Catapult (not shown) are both SST-50-based lights driven harder on Max – but at the expense of runtime and with greater heat generation. The M21 likely strikes a good balance for long-term stability.

    Overall, runtimes seem pretty reasonable for the output levels - the M21 doesn't seem quite as efficient on Med as the original M20.

    Potential Issues

    I can’t really think of anything significant. The M20 has proven itself a reliable and robust light, and given the balanced approach to managing output with the SST-50 version, I am sure the M21 will prove the same.

    Preliminary Observations

    I’ll get right to the point – I think Olight has another winner on its hands.

    The M21 is really a direct port of the Luminus SST-50 to the M20 design, with a slightly larger head and revised reflector design to accommodate the new emitter. Otherwise, the body parts are interchangeable, and even the relative output levels are not so different (more on that in a moment).

    The M20 has a lot of “legs” in the flashlight world. I first reviewed it 15 months ago, yet it remains one of the better choices in the general purpose/tactical 2xCR123A market. Moreover, Olight has managed to keep the quality of construction and availability of extra options roughly constant over that time – which is something of a feat for this market.

    The main advantages of the M21 over the M20 are due to the Luminus SST-50 emitter, and include greater output on Hi, smoother beam pattern, and (in my experience) lesser likelihood of extreme tints (especially green ones). Potential drawbacks to the M21 are the reduced throw (due to the larger emitter die), lower Med/Hi runtimes, and potentially greater heat.

    Olight seems to have resolved the latter issue by not driving the M21 as hard as other Luminus SST-50-equipped lights (e.g. ThruNite Catapult, Lumapower Dmini VX Ultra). While you still get a significant output boost compared to the M20’s Cree XR-E R2, in my testing the M21 is no more than ~40% brighter overall (and perhaps less). Those expecting something closer to twice as bright will have to look at other lights.

    But this is not a bad thing – personally, I am a little concerned about how heavily driven some of the other SST-50 lights are. Only time will tell, but I suspect Olight has struck a good balance in maximizing the life of the LED (and consequently the light) with a reasonable set of output levels (and thus heat).

    At the end of the day, the choice between the M20 and the M21 comes down to the differences in beam pattern and output. I don't know if there are enough compelling reasons to “upgrade” your M20 to a M21 – that’s your call - but I think new users will be happy with the build of either.
    Last edited by Unforgiven; 03-13-2011 at 12:36 PM. Reason: links
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  2. #2

    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Very good review as always thankyou. I have seen and tested the Olight M20 Ti version and was wondering if you know of anything different about the Ti M20 and the M21. Everything points to them being the same inside. Thanks again your stuff is priceless.
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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Great work as always!

    Olight have stuck with a good design and used the new emitter to improve the performance. I like your point that they haven't gone crazy and tried to wring the maximum possible output from it - that is a sensible approach. 2-3 years ago, no-one would have believed 500 lm from a light this size was possible.

    Moving to the Reviews section...
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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    As always a nicely done review, but I have a few comments:

    What are you showing on the oscilloscope trace, I would expect a flat line when you have no pwm (Not the strobe)?

    The output matches my measurements on the M20 Ti (that was the predecessor to the M21). In this, rather small, light it is probably a good idea to run the SST50 at lower power levels, but in bigger lights I do not see any problems with running it at higher power.
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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Quick question regarding perceived brightness:

    If one was standing say 10ft out and within the hotspot but on either side - not direct-center, which flashlight would be perceived as brighter the M20 or M21?

  6. #6

    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Thanks mate for such a great review. Its always informative to read your reviews. appreciate your efforts.

    cheers

  7. #7

    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Thanks for the support everyone!

    Quote Originally Posted by DM51 View Post
    Olight have stuck with a good design and used the new emitter to improve the performance. I like your point that they haven't gone crazy and tried to wring the maximum possible output from it - that is a sensible approach. 2-3 years ago, no-one would have believed 500 lm from a light this size was possible.
    Quote Originally Posted by HKJ View Post
    In this, rather small, light it is probably a good idea to run the SST50 at lower power levels, but in bigger lights I do not see any problems with running it at higher power.
    Yup, I think it is very sensible in this case. And it's true, the much larger ThruNite Catapult should be able to handle the higher power - it was the smaller D-mini VX Ultra I was thinking of in my comments (and other potential lights of this 2xCR123A-size class).

    FYI, my D-mini VX Ultra review should be up by end of day tomorrow ...

    Quote Originally Posted by HKJ View Post
    What are you showing on the oscilloscope trace, I would expect a flat line when you have no pwm (Not the strobe)?
    Ah, that's likely just noise in my setup.

    My oscilloscope is just a freeware piece of software that monitors my sound card's mic-in port ... and my high-tech probe is dollar-store microphone where I've stripped off the head and wired in a red LED instead. I've also recently upgraded computers, and am just using the built-in sound features instead of dedicated card (used to run an SB Audigy), hence why things have likely gotten a bit "noisier".

    And I enjoy your reviews too - keep 'em coming!

    Quote Originally Posted by sfca View Post
    Quick question regarding perceived brightness:
    If one was standing say 10ft out and within the hotspot but on either side - not direct-center, which flashlight would be perceived as brighter the M20 or M21?
    If you mean around the edge of the hotspot (i.e. the corona), then no question - the M21 is brighter. Its hotspot is much broader, and illuminates an area about twice as wide by 10ft out.

    Just tested it with a lightmeter (since tint differences make it hard to judge by eye), and the difference is clear. Even if I move more toward the end of the respective hotspots, the M21 maintains an output advantage at all areas just outside the immediate centre-beam hotspot (where the M20 is of course brighter). I'll see if I can take some pics once it gets dark ...

    UPDATE: Here are some close-ups at 5m to better show you the hotspots. Both lights on Max on 18650. The height of each image is ~1.25m.





    Pardon the spackle marks (this is from an unfinished part of my basement ). But as you can see, the M21's hotspot illuminates an area about twice as wide as the M20 at 5m. The width of the hotspot is about 1m wide for the M21, half-a-meter for the M20, at this distance.
    Last edited by selfbuilt; 01-08-2010 at 03:45 PM.
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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Thanks!!!!

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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Thank´s for a great review!
    Just got my M21, and I haven´t had the opportunity to try it out really yet.
    But what I have tryed indoors, it seems to be a winner.

  10. #10

    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Great review as always Thanks!

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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    to SelfBuilt --


    _

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    Flashaholic* The Coach's Avatar
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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Thanks for the review. I'm glad, because I have one on it's way down the turnpike.

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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Nice one Selfbuilt, excellent review as always. I've been waiting for this one!

    One thing puzzles me. I know manufacturers routinely overstate runtimes etc, but Olight state -

    "Functions: Three brightness levels plus strobe, 20lm (30hrs)-80lm (8hrs)-500 lm (1.2hrs), Strobe(500lm/2.4h)"

    Comparing Olight's stated medium 80lm for 8 hrs to your runtime graphs there is a huge difference. You got 2h34m on med with AW RCR's and 5h34m with 18650 neither of which comes close to Olight's claims. Furthermore, can Olight really be that cynical to quote maximum brightness figures on one hand with the optimum battery config of 2 x RCR and yet in the same sentence claim runtimes that have to be with 18650, giving much less brightness, and even then nearly double what you have measured?

    Have you any idea what is going on here? Have Olight really overstated this light so badly or could the unit you have be flawed in some way?

    Olef

  14. #14

    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Quote Originally Posted by Olef View Post
    Comparing Olight's stated medium 80lm for 8 hrs to your runtime graphs there is a huge difference. You got 2h34m on med with AW RCR's and 5h34m with 18650 neither of which comes close to Olight's claims. Furthermore, can Olight really be that cynical to quote maximum brightness figures on one hand with the optimum battery config of 2 x RCR and yet in the same sentence claim runtimes that have to be with 18650, giving much less brightness, and even then nearly double what you have measured?
    I'd say it's a pretty sure bet they are using 18650 for their runtime estimates, and likely newer high-capacity 2600-30000mAh ones. I still use the older 2200mAh AWs, to allow backward comparison to my earlier data. With higher capacity 18650s, and taking into account variation in emitters, circuits, etc., those runtime estimates seem quite believable.

    Not so sure about the actual lumen estimates ... although I know my lightbox is hardly linear above Med settings, I don't think Hi is really more than 6 times brighter than Med. Just a guess, but I'm thinking that 500 lumen estimate is a bit of an overestimate - something in 350-400 range (tops) is more likely. Similarly, the 80 lumen Med also seems like an underestimate (probably more like something in the 100-120 lumen range). The 20 lumen low sounds about right, but might actually be even a bit lower (which is why I haven't done runtimes - should last a long while). But someone with a calibrated light sphere would have to make those determinations - I'm just guestimating here.
    Last edited by selfbuilt; 01-08-2010 at 09:08 PM.
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    Flashaholic* applevision's Avatar
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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Outstanding as always, Selfbuilt!
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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Quote Originally Posted by selfbuilt View Post
    I'm just guestimating here.
    And doing a superb job too, thank you. I look forward to every one of your reviews

    I was just surprised by the disparity in the runtimes you achieved and those that Olight publish, and I guess a little disappointed in both Olight and the M21. That aside, I like my M21 a lot. It's well engineered, has a no-nonsense UI and chucks out a amazing amount of light for its size - plus its floody nature makes it so very useful for close / mid-range.

    It's still going to be my bedside light, but now I might invest in extra AW cells so I can keep it running

    Olef

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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Great job as always!

    Olef - most factories use the highest capacity 18650's for runtime tests - 2600-3000mah is common. As selfbuilt points out he uses 2200mah in his tests so I'm not sure why you are disasspointed in Olight. Also, the factories often use unprotected batteries when doing these tests (Japanese 2800+mah 18650;s aren't tey available in protected form).

    Wouldn't you be using some of the highest capacity products to test your products to state the best possible runtime?
    Last edited by Unforgiven; 03-13-2011 at 12:37 PM. Reason: link removed

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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Yesterday I tryed my new M21 at work for the first time, and it´s quite impressive.

    Not the best thrower, but a whole lot of light.
    Last edited by Geban; 01-11-2010 at 02:52 PM.

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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Quote Originally Posted by MattK View Post
    Olef - most factories use the highest capacity 18650's for runtime tests - 2600-3000mah is common. As selfbuilt points out he uses 2200mah in his tests so I'm not sure why you are disasspointed in Olight. Also, the factories often use unprotected batteries when doing these tests (Japanese 2800+mah 18650;s aren't tey available in protected form).

    Wouldn't you be using some of the highest capacity products to test your products to state the best possible runtime?
    I certainly would try to show my product in the best light (lol) possible. I just find the stated medium of 8 hrs a bit too overstated based on Selfbuilt's excellent review. 5h20 on 18650 and 2h34 on RCR's are both a long way off 8hrs. That, to me, is a little like paying out for a 150mph sports car and finding under real world conditions it cannot even make the ton!

    Especially as AW 18650's cost the equivalent of over $19 a pop in the UK

    Olef

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    Flashaholic* MattK's Avatar
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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Well the key is that selfbuilt is using rather old 18650's - most everyone is using 2600mah + cells these days. Selfbuilt, as noted above has only stayed with the 2200's to lend his review runtimes consistency so it's not fair to fault the factory for that.
    Last edited by Unforgiven; 03-13-2011 at 12:38 PM. Reason: link removed

  21. #21

    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Quote Originally Posted by MattK View Post
    Selfbuilt, as noted above has only stayed with the 2200's to lend his review runtimes consistency so it's not fair to fault the factory for that.
    Quite true ... and quite daunting from my end to go back and re-test all those older lights with 2600mAh cells. I have enough on my hands with all the new lights everyone keeps sending me.

    Also, manufacturer's rarely use time to 50%, most use a relative "useable" light measure. If you pick the time my 18650s were almost dead, then by a simple calculation based on my results, a 2800mAh cell should give you a good 7 hours runtime on Med, and a 3000mAh cell would give you 7.5 hours (assuming everyone is calculating the mAh rating the same way - a big assumption). Taking into account emitter and battery variation, 8 hours is not such a stretch.

    But I suggest it might also be possible that Olight has slightly changed the output from initial spec (i.e. 80 lumens seems a little low to me, I'm thinking it's more like 110-120 lumens, based on other lights I've tested). If the output of the final shipping version is indeed a bit higher than what they originally tested, than could also easily explain the rest of the variance.

    Note that I'm not "defending" anyone's runtimes estimates - I actually believe manufacturer's estimates should be largely ignored, and the average of what individual users report be taken as the best indicator. In the real world, n=1 is not very reliable.
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  22. #22
    Flashaholic* MattK's Avatar
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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Heh, on the website we often use your data rather than the factories.
    Last edited by Unforgiven; 03-13-2011 at 12:38 PM. Reason: link removed

  23. #23

    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    FYI, Mrs Selfbuilt has given the M21 a in a little inpromptu field testing this evening (group walk). I gave her the option of the M21 or the D-mini VX Ultra on 18650, and she choose the M21 because she preferred the interface (doesn't like switching modes at the tailcap, prefers a head twist - she's a die-hard Fenix L2T fan )

    Of course, she didn't need Hi - Lo and Med were fine. But I liked the thought that she had it there as a backup. Only thing she'd change is removing the strobe mode.
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    Flashaholic* berry580's Avatar
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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Quote Originally Posted by MattK View Post
    Wouldn't you be using some of the highest capacity products to test your products to state the best possible runtime?
    I think they should state what batteries they used to achieve the runtime. That should minimise conflicts.
    Maglite 4D Incad., Solitaire, 3D LED Jetbeam Jet-I MKII R, Jet-III PRO Ti, Jet-Ti M, TC-R3 ,TC-10 Fenix LD01 SS Surefire C2 4Sevens Quark AA Ti, Quark Mini AA, Preon 0

  25. #25
    Flashaholic* MattK's Avatar
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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Perhaps but the only factory i know that ever does that is LumaPower.

    Not one other factory that I can think of, in the whole world, tells you what battery they're using.

    So, it's probably not a realistic expectation.
    Last edited by Unforgiven; 03-13-2011 at 12:39 PM. Reason: link removed

  26. #26
    Flashaholic* BUZ's Avatar
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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    WOW, great review and pics!!!
    My reading of history convinces me that most bad government results from too much government.
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  27. #27

    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Quote Originally Posted by MattK View Post
    Perhaps but the only factory i know that ever does that is LumaPower.

    Not one other factory that I can think of, in the whole world, tells you what battery they're using.
    It's off topic in this thread but ZebraLight also publishes what battery they use for the runtime data. JetBeam does not but they answered when I asked.

  28. #28
    Enlightened
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    Thumbs up Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Awesome review! I love the beamwidth and spill. Looks like a suitable replacement for my TK11-r2 that ended up living in the wife's truck. Many thanks.
    SRB - CPF member #3793

  29. #29

    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Just got my m21, the only other flashlight i have is an old LumaM1Hunter. My old LumaM1Hunter throws a little better but the m21 beats it everywhere else. Most of my work is up close and the farthest would be 100ft, so the m21 beats the LumaM1Hunter here for my use.

    At work I use it when i am under desks, walking into dark rooms and working in the ceiling. At home i use it for walks and when i get up in the morning looking for my clothes (dont want to turn on the lights and wake up my wife).

  30. #30
    Flashaholic* HIDblue's Avatar
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    Default Re: Olight M21 (Luminus SST-50) Review: RUNTIMES, BEAMSHOTS and more!

    Great review selfbuilt Meticulous yet understandable by the not-so-technically inclined, like myself.

    I bought my first high-end flashlight (a JETBeam Jet-III M) primarily based upon your review, but am now getting the itch to buy the Olight M21 also based upon your review. You're killin me man! I swear to god, flashlights are like crack...one little taste and you're hooked (hypothetically speaking).

    Anyways, keep up the great work.

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