Is White Phosphor Better Than Green Phosphor Night Vision? Let's put that to the test!
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- čas přidán 7. 06. 2024
- Today Ryan looks at the classic argument of Green vs White Phosphor, we all know that WP tubes are the hottest things on the market right now but does that make green tubes obsolete? We run through our tests to find out, the results may surprise you.
EDITORS NOTE: There's a small error at 10m18s where it was supposed to be 0.1mfL NOT 0.01 which comes later in the video. Thanks!
TIMESTAMPS:
0:00 Intro
0:34 History, Science, the Human Eye
2:47 The Benefits of Green Phosphor
3:23 Photonis GP Tube and Gain
5:06 Testing Parameters and Devices
8:11 Hoffman Gain Test
9:00 Hoffman Resolution Test
11:35 Urban Light Test
12:34 Full Moon Test
13:13 Medium Low Light Test
14:37 Full Canopy Low Light Test
16:06 Closer and Results
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![Chinese Autogated NNVT vs Photonis Echo | Are these NVG tubes any good? [4K]](http://i.ytimg.com/vi/66sOQ0TkXb8/mqdefault.jpg)
![Chinese Autogated NNVT vs Photonis Echo | Are these NVG tubes any good? [4K]](/img/tr.png)
Another great video! We like your videos because they address details with explanations that most users don’t cover.
From our testing, green phosphor has better contrast - even when the FOM/Gains are similar. 4G very high FOM (above 2500) Green Phosphor is what we use in our intensified digital night vision cameras, because the GP input to the CMOS provides more contrast to the CMOS, which enables maximum performance (output) since the image output from the CMOS is B&W.
In terms of that testing summary, you flashed on the screen it would have been better if the organization doing that test had concentrated on object recognition in an obstructed environment instead of having a goal of shot placement using laser designators. The way they ran the test, the soldier’s brain function/hand to eye coordination was focused completely on shot placement. With the use of a laser designator, it wouldn’t make that much difference if you were using WP or GP as the soldier would focus solely on the spot on the target, and the results pretty much indicated that it really didn’t make a difference. Perhaps if the goal of the test was identifying objects or reading letters/numbers it would have produced a different result. With that said, even US Army testing has shown that it doesn’t make a difference to most people - however, it does make a difference within our own testing, which is why our intensified cameras use GP - and for other environments we use a variety of phosphor coatings in different colors based on the use of the image intensifier. At the end of the day (or night) what we always tell people is that everyone's eyes and brains are calibrated differently for image interpretation, and what looks best to them may not apply to someone else. Plus, if one adds other elements to the mix, such as our 50-degree objective lenses, it changes even more how the brain interprets contrast/resolution. Therefore, people should always get what looks best to them at the price they can afford no matter who makes the gear. After December 2023 ECHO tubes will phase out and only the higher end 4G tubes will be available (in varying FOMs), because of fewer fall-outs.
The green tubes are really overlooked for how well they perform.
Thanks for the additional information and context once again. Can't wait to see what you guys are cooking up in the future.
Do you bond your CMOS to the fiber optic bundle or use a relay lens? I'm highly interested in making my own non afocal camera adapter and wonder how to correct for the rounded fiber optic output or whether I should contact Schott for a Sensor to fiber bond. On your website I can't really see what the cricket device uses, appears to be a relay lens though
It is bonded directly to the fiber optic bundle.@@wylnd
Does less dropouts and higher yields mean that 4G will be cheaper (compared to today)?
@@ZIEKedit Only when the US opens its ITAR floodgates or we get more serious european competition for Photonis. I really hate their monopoly, ITTs should not cost that much anymore. Especially with production speeding up because of Ukraine
Still waiting for amber phosphor tubes, truly the coziest color as proven by Fallout New Vegas.
Amber phosphor tubes, Project Nevada, Darker Nights, and the Anti Materiel rifle.
Life was simpler back then.
Ahh a cultured individual
😂
Very informative video. Thank you!
Thanks for the upload, your other upload(s) have been instrumental in me making a well informed decision on my purchase. Went for BNVD 1432s with NVT5 WP tubes, 1800 FOM. Not the greatest but pretty decent for someone just starting out and honestly, probably wouldnt see or appreciate the difference at my current level of use anyway.
Great to hear!
Great video. Thank you
Wow, I'm surprised by the benefits of green. Especially in the forest! So much more shading.
Yep! We do think the Photonis green tubes are very overlooked for some of the benefits they provide.
Great video
As usual perfect video but I would like a video: echo white vs gen3 omni8 green !!!! Please!!!!!
Good video
this is a great example on why you should have thermal. scan with thermal and identify with NVG.
Which color phosphor would you choose for identifying with night vision?
@@IntrepidDivergencethe one that works for you. not everyone is the same and not everyone has the same free money. i would love white but cant afford them.
This was the video that was promised to me after my reddit post. Nice!
We live to give.
@@coldharboursupplyI really appreciate your willingness to help! I'm really happy with my 2337 WP Echo. Seeing this almost makes me want to buy a green as well, but there is not much of a use for me. It would still be nice to have, though. 😂
My 2600 FOM Photonis absolutely wrecks my Omni 7 cripsy GP contract tube in low light. They human eye sees low gain much much better. He talked about that in the beginning but to really see it, its not this "Night and Day" different shown on video. @@Mr_Glenn
they really are just "different", i dont really think one is better than the other. Its truly a preference matter. A while ago I got to look through some SOCOM spec L3 UFWP tubes and I was so excited and the first difference right away was obviously the color. It was a pretty dark night, no moon, overcasted, we were 40 miles away from the nearest town at this event and I did see more of that "Black and white" look to them. I have an Omni 8 L3 tube which I have tested along side some pretty high spec elbit and L3 tubes, so I am very confident when I say my Omni 8 tube certainly exceeds minimum DoD specs, especially in gain and SNR - I put my GP omni 8 tube right next to that WP tube and....the image was deff the same in terms of what I could see and not see. Because "white" almost feels like a damn flashlight is shined into my eye...I had to turn the gain down on the WP unit so it wasnt so bright. It wasnt so bright as in "I can see more than my GP tube", it was just the color of the WP tube was to intense to my eyes, that I had to turn down the gain. Its like looking at a website that doesnt have a dark theme at 2 in the morning, you have to turn "night mode" on your phone so its not too much on your eyes. I find with GP, I actually have *less* eye strain and my entire military career...never once got a headache because of my nods. I got headaches from the helmet itself and long term use during operations. I didn't wear it JUST at night...its obviously worn during the day aswell.
WIth WP, i saw why people love manual gain. Like I said, I had to turn the gain down again simply just because of the color being more sensitive to my eyes and being more "bright". Not because it had more "gain". With GP? I use ABC on my device. I removed the pigtails off my tubes. I prefer ABC...but with GP. Deff not WP. And, to your point, GP is cheaper so I run GP not because I like it "better", but because it was much more cost effective. Omni 8 tubes when I bought them were about 1200 still in the package. Elbit XLSH tubes were in the 2500+ range. For the price of 1 WP tube, I got 2 GP tubes. If I want a more "WP look"? I just throw a filter on my device. I know LLI has their filters (which I own), but if you really want an actual "WP" look? Get blue filters on ebay. MUCH MUCH more WP looking and actually dont cut down on the light to your eye than purple filters do.
As you said, all this comes down to preference. Do I prefer WP? Yes. Do I 'NEED" WP? No. I chased wanted WP tubes so bad until I looked through them, I realized id be spending thousands to change out my tubes...literally for a different color of phosphor...for what? To Be cool? Nah. LOL until the money is there to throw at it...Ill be sticking to my GP Omni 8 tubes for a long, long time.
Makes sense to me
Welcome to Dubai gentlemen.
Having used both in the military, I prefer green.
I don't think prices will fall that much for new commercial GP tubes. GP tubes are a little cheaper right now, but manufacturers are also making fewer of them since the industry has moved fully on to WP.
Within the American market that may be true but outside of the US green production is still steady for now. However, this is a rapidly evolving industry and time will tell if the context of this video changes in the future.
Okay this was helpful. I have more experince with green have you tried the green with the infiray clip on or fusion?? I have the CE5. Which do you prefer. I would think green makes more sense as the less light there is the better the fusion thermals work in a way.
Both green and white tubes work fine with the clip on. I prefer WP, but GP with a COTI works well. Phosphor colour does not change the performance of the thermal.
you guys should get your hands on a sionyx opsen and put it through the testing regime
I notice you guys don’t carry the green for Jerry 31s.
How would the WP stack up against a GP with an amber/white filter? Everyone knows that filters eat performance, but how bad is it?
You will get some loss of brightness an image with any filter you put on your lens. We would say you get slightly less brightness than the WP Echos we posted here, so it brings it down a notch. That being said, you also don't get that eyestrain you might get, and it lowers the signature of the NOD considerably.
It is removable so for users needing max gain, you can simply remove it. Personally, I find that because the Echo GPs are not as bright or as harsh as most GaAs (gen 3) tubes, I run without it. YMMV.
I pledge allegiance to my Flag and the Republic for which it stands, one nation, indivisible, with liberty and justice for all.
Great job, but .... The description is wrong. 10:20 there is 0.01 mfL and at 10:38 there is 0.05 mfL (shown as darker), and at 11:01 there is 0.01 mfL again (described as even darker than earlier). And there's something wrong with the system gain measured I'm affraid. For SG 4500 when optics is standard military (i.e. Carson) PR must have been over 1700 uA/W to give this high system gain. Photonis doesn't produce this powerfull photocathodes yet. For the second NVG with SG about 5360 with ratio of tubes luminance gain between the two about 1.38 photcathode response should be extreeemly poor for the second tube in comparison if the optics are similar.. :-)
Thanks for the feedback. Mentioned the editing error in the video description.
As for the SG the Hoffman reads what it reads. Sample size of one and all. Trying to keep settings consistent. There's no user input for the system gain tests of the Hoffman other than the unit calibration when you put the probe on the lenses. Gen 3 typically puts 8K+ SG so Photonis pushing 4-6K is not too out of the ordinary given the difference between Multi-Alkali tubes and GaAs ones.
If you can procure some better results we would love to see it.
Was issued a AN/PVS-7s during Desert Storm and they were B/W and much easier to drive with than the older dual green ones.
I finally got a white phos set up and i was shocked my green 14 can see in darker conditions up close its the difference between tripping over the coffee table or dog and not
I think white phosphorus is definitely better for spotting movement.
I think white phosphorus is better at ending movement
Nope, they’re about the same. Depends on the person.
Dude, literally just proved you wrong in this video
Hey I know that haircut!
when will cold harbour get gen3 tubes?
What price should I expect for unfilmed gen 3 WP/GP
SNR: 30
EBI: .8
FOM: 2000
HALO .8
LP/MM (64 to 72)
?????
3000 to 3300. Custom nvg sells tubes with those specks for that price.
@@TRUMP-od7vi I have seen a l3 Harris unfilmed 35 SNR , .5 EBI, .7 HALO, FOM 2200 for 3900$, what do you think of that price with a 10 year warranty?
@@MOAON_AABE your paying for a warranty. The tube won't go bad for a long time and there are tubes out there that last 30+ years. Heck even some gen 1 tubes still exist. So I'm my opinion the warranty is not very important.
@@TRUMP-od7vi thanks so much, and what a about good used PEQ 15, what do you think a FAIR price for that is
@@MOAON_AABE to be honest I couldent tell you. I'm more just eyeballing the nvg market rn trying to get a good deal.
White phos auto corrects to white phosphorus haha. I’ve looked through some high spec green tubes that look freaking amazing. Shouldn’t we all be buying supergain tubes then?
I know it useless but they actually do popular color by region
what does that even mean?
But here is one thing that can't be measured with numbers ... the drip factor of White phosphorus 😌
What’s does that even mean 😂
I came here to see what was gonna show me the best thing under low light
I could give a fuck less about “drip factor”🤡
White phosphor doesn't work for me I can't see anything with white phosphor
Can't beat the classics sometime.
You rook rike perlson who eadda lodda lice
Fuck is wrong with you?