Beam Shots - Magic Scorpion, De-domed SR90, S18, XT20, DEFT edc LR, RRT-3 XML, DRY+

I grabbed some beam shots the other night, thought they might be useful to compare some lights out there with each other.

For myself, when people post beam shots, it helps me to calibrate what to expect...especially if they also include a light I HAVE in the mix.

The shots include an assortment of Olight SR90 (De-Domed) and the Magic Scorpion HID, and the DEFT edc LR - on some long range (500 - 800 meter) targets...they reached both.


And some additional shots on closer (233 meter) targets for the 4sevens S18, the Klarus XT20, the Jetbeam RRT-3 XML, DRY, and Big Bruiser...for mid-range.

I didn't do any closer than the 233 meter range....my camera battery decided it had been enough pics for the night.








A few (Proof I need a better low light with zoom camera...) beam shots for calibration purposes:


Magic Gashfire illuminating a Power Line Tower at 800 meter range (In real life, you could see it better, but the pics suck - apply accordingly to pics to follow, etc...)




De-Domed Olight SR90 illuminating same tower at 800 meters (In real life, it was easier to see than with the Magic, but you could see the tower was actually lit up by both of them)




Magic on Tower at 500 Meters




DD SR90 on same tower at 500 M, not zoomed (Forgot to shoot Magic unzoomed :duh2: )




DD SR 90 on 500 M tower






--------

Pond, 233 meters to treeline on other side of pond - A building, visible as a light colored wall in some shots, was on the other side of that tree line, about another 40 meters further away.



Control





Magic






Magic






Magic





Magic






DD SR90






DD SR90






DEFT edc LR






DRY






Klarus XT20





XT20





XT20





Jetbeam RRT-3 XML





RRT-3 XML





RRT-3 XML






Foursevens Maelstrom S18






S18





S18





So, that should give some real world order of magnitude comparisons for the Gashfire....I think it has a nice tint, pumps out a ton of light, and for the $, it works fine. If it KEEPS working, or if the banging around to get it to me messed it up, etc...I won't know for a while (I hope a LONG while)

Saw a dedomed sst90 in sr90, this is definitely worth to see!!!Thanks for your effort! How did you dedome the sr90? Accidentally, on purpose or it just happened without knowing why?Any estimates on lux? I should guess about 200000 lux right?

ergotelis said:

Saw a dedomed sst90 in sr90, this is definitely worth to see!!!Thanks for your effort! How did you dedome the sr90? Accidentally, on purpose or it just happened without knowing why?Any estimates on lux? I should guess about 200000 lux right?

Click to expand...

LOL

Good guess, 203,000 at 1 meter.



I did it on purpose...I mailed it to Wayne (vinhnguyen54)

He said it took ~ 10 minutes.

Description:

http://www.candlepowerforums.com/vb/showthread.php?334219-vinhnguyen54-Olight-SR90-amp-SR91-De-Dome



I'm too likely to screw it up, never did a de-dome SST90 - and Wayne HAD done de-domes, and we were mailing each other stuff anyway...so I sent him the head because he already had a battery for it, etc.

He then sent it back with another light for efficiencies sake, etc.

Hi again, i was experimenting on dedomed sst50 and sst90, i remember the gain in lux by this, i just wanted to confirm. Did you manage to record a 25%-30% drop in lumen output too?
Currently i am experimenting on dedomed xm-l, works really nice, i am getting 200,000+ lux on the classic 71mm reflector from a trustfire x7.
I would love a dedomed xm-l in the sr90 10cm reflector, this should definitely be your next project! But it needs a new driver too, i am pretty sure you would catch 400,000 lux!

ergotelis said:

Hi again, i was experimenting on dedomed sst50 and sst90, i remember the gain in lux by this, i just wanted to confirm. Did you manage to record a 25%-30% drop in lumen output too?
Currently i am experimenting on dedomed xm-l, works really nice, i am getting 200,000+ lux on the classic 71mm reflector from a trustfire x7.
I would love a dedomed xm-l in the sr90 10cm reflector, this should definitely be your next project! But it needs a new driver too, i am pretty sure you would catch 400,000 lux!

Click to expand...

BWah HAH HAH HA!

:devil:


I did not measure the lumens, only the Lux. I'm not sure how much of a drop there was actually, because visually at least, it just looks like the corona was pushed into the hotspot, so I just had a stronger hot spot, and about the same spill.

I don't have a way of measuring the lumens, and the head was too large for some of the people who also wanted to measure even stock SR90's etc...so I'd need someone with an IS, etc.


I ALSO don't have a baseline Lumen measurement for a stock SR90 for the same reasons. IIRC Selfbuilt's estimate for the SR 90 was 1,300 OTF for example.

So, we might have 1,300 lumens as a baseline.

Off hand, if its ~ 1,300 lumens, I'd call that no loss, and anything less than 1,300 would be "Loss".

What kind of driver would you think would crank this puppy up to 400k lux?

:devil:

Pardon my ignorance, but what is a de-domed flashlight, like the SR90 you talk about in this thread?

There must be others out there that would be puzzled by this talk!!

Oztorchfreak said:

Pardon my ignorance, but what is a de-domed flashlight, like the SR90 you talk about in this thread?

There must be others out there that would be puzzled by this talk!!

Click to expand...

The LED is covered by a dome. The dome spreads the light out/diffuses the beam to the reflector/OTF. This increases the total lumens out the front of the lens, but distributes those lumens in a broader pattern.

Essentially, most lights throw a 3 part beam pattern (Shine the light on a white wall and you can see it typically): The hot spot in the center, a corona of bright light around that, and then general spill, which is unfocused light spilling off of the hot spot/corona pattern, etc.

If you pry off the dome (its held on by a gooey adhesive so it can expand/contract, etc...), you increase the amount of light in the hot spot, and decrease the peripheral light of the beam. This can decrease the total lumen output, but maximize the amount of lumens being thrown downrange. So if 40% of the total lumens used to be spent lighting up the areas within 50 meters of you, and another 40% was spent lighting up a target at 500 meters, and the other 20% was in the corona lighting up targets within say 300 meters, de-doming might re-proportion that to take a lot of the 60% of the lumens NOT reaching the target, and concentrate them ON the target.

(Ignore the actual numbers, I just made them up as an example)

The actual numbers depend upon the starting numbers, most of which are unknown...as no one has actually posted how many lumens are actually in a given corona, spill, etc.

What we DO measure is the Lux at 1 meter, and the total OTF Lumens....which gives us an estimated throw and total out put, but not the balance between them per se.

So, on the SR90 at least, which has a 4" reflector, the re-proportioning via the de-doming yielded a much stronger hot spot, which yielded a proportional increase in useful range, without making the hot spot smaller, and without noticeably reducing the spill.

So the light quantity and surface area covered increased at the target, the spill which can be useful for walking around remained, and the corona seems to have simply been added to the hot spot to do it.

As for a thrower the OTF lumens are less important than Lux on the target, the dramatic increase in lux on the target far outweighs subsequent OTF lumen impacts, at least for the observed SR90. For the SR90, it just flat out works better.

TEEJ said:

BWah HAH HAH HA!
I did not measure the lumens, only the Lux. I'm not sure how much of a drop there was actually, because visually at least, it just looks like the corona was pushed into the hotspot, so I just had a stronger hot spot, and about the same spill.

I don't have a way of measuring the lumens, and the head was too large for some of the people who also wanted to measure even stock SR90's etc...so I'd need someone with an IS, etc.


I ALSO don't have a baseline Lumen measurement for a stock SR90 for the same reasons. IIRC Selfbuilt's estimate for the SR 90 was 1,300 OTF for example.

So, we might have 1,300 lumens as a baseline.

Off hand, if its ~ 1,300 lumens, I'd call that no loss, and anything less than 1,300 would be "Loss".

What kind of driver would you think would crank this puppy up to 400k lux?

:devil:

Click to expand...

Ok thanks for the info. To get the highest lux (400,000 is just an estimate nothing more!) you have to get a good U2 xm-l Dedomed, in a copper heatsink like the one ledtech.de has. Then, a good 5amp driver like Der wichtels' is going to do the job fine. As you can understand, it needs a lot of modding, but the result might be worth the effort. You will get the most throwy reflector based led flashlight!
I am experimenting now with an 71mm aspherical lens in a dedomed cree xm-l, the lux number is crazy, i am just trying to get the most out of it! I want to get all the light from the led focused into a tight beam(the distance between the led and the lens makes some light to escape) , i am experimenting on using extra a reflector or maybe another smaller lens.

ergotelis said:

Ok thanks for the info. To get the highest lux (400,000 is just an estimate nothing more!) you have to get a good U2 xm-l Dedomed, in a copper heatsink like the one ledtech.de has. Then, a good 5amp driver like Der wichtels' is going to do the job fine. As you can understand, it needs a lot of modding, but the result might be worth the effort. You will get the most throwy reflector based led flashlight!
I am experimenting now with an 71mm aspherical lens in a dedomed cree xm-l, the lux number is crazy, i am just trying to get the most out of it! I want to get all the light from the led focused into a tight beam(the distance between the led and the lens makes some light to escape) , i am experimenting on using extra a reflector or maybe another smaller lens.

Click to expand...

I have a Cree STLV2 with XML-U2 running on 4.2A with a single 18650 tube, and a Trustfire X7 with a de-domed SST-50....they throw like a MoFo.



I have pics somewhere

Trustfire X7 with a de-domed SST-50

Same Pond Location, ~ 233 meter range, and night, as other shots above















Cree STLV2 with XML-U2 running on 4.2A with a single 18650 tube (same conditions)

Good shots.

Xtar S1 will be pretty tough competitor to SR-90

space-cowboy said:

Good shots.

Xtar S1 will be pretty tough competitor to SR-90

Click to expand...

Yeah, I can't wait to get my hands on one. :devil:

I think I'll be surprised if its not way brighter, but I'll ALSO be surprised if it can throw as far.


Hmmm, looked, selbuilt and a few others reviewed the S1 already...not even half the throw. (But a lot more lumens)