Texas_Ace BLF Calibrated Lumen tube / Sphere No math skills needed - Several spheres still available

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JasonWW
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KG_Tuning wrote:
Tried my tube today, every light is about 40% off, wonder if I have a dodgy light meter.

Are you basing this off of the lights factory specs and you seem to be measuring 40% less? Some examples that you measured would help us know for sure.

Your lights are still as bright as before you measured them, it’s just that now you are seeing the real numbers.

Also, have you seen the right way to measure them? You turn the end tube up 90%. You find the disc that is closest to the flashlights head diameter. Put the shiny side of the disc facing down, then put the flashlight head through the hole just a little bit (maybe 5mm to 10mm) and move it up and down a little until you get the highest reading.

I had joked that it’s kind of like waking up from the Matrix. What you thought was real was all a lie. A light you thought was 1000 lumen may have been 600 or 700 all along. Shocked

Welcome to the real world. Lol

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Texas_Ace BLF Calibrated Lumen tube

 

KG_Tuning
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My PT16 is measuring 950 lumens so is 10% off.
My Emisar D4 XP-L HI is measuring 3500 lumens so is about 20% off.
My DX80 is measuring 20000 lumens so is about 60% off making the calibrating tube redundant.
I’ll try another HS1010A light meter to see if that’s the problem.

My 4K Flashlight reviews (DX80, X80-GT, X45vn, DT70, MF04 etc) - https://www.youtube.com/c/FLASHAHOLICS_GB

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KG_Tuning wrote:
My PT16 is measuring 950 lumens so is 10% off. My Emisar D4 XP-L HI is measuring 3500 lumens so is about 20% off. My DX80 is measuring 20000 lumens so is about 60% off making the calibrating tube redundant. I’ll try another HS1010A light meter to see if that’s the problem.

What makes you think those numbers are off exactly?

They sound perfectly reasonable to me. As has been shown dozens and dozens of times in this thread, the ratings on lights means almost nothing. Fenix is the only brand that seems to get close to the ANSI ratings on a consistent basis that I have seen.

The D4 is an FET light and makes for a very bad comparison light, although 3500 lumens is actually pretty impressive, that must be with an 18650, not 18350.

IIRC the DX80 is well known to be overrated as well, although I do not have one to test msyelf. I am sure someone else can chime in though.

Overall, those readings sound very good to me.

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The ultimate result of shielding men from the effects of folly is to fill the world with fools. --Herbert Spencer , English Philosopher (1820-1903)

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My LED Test series - XP-L2 V5  - Nichia 219C 90+ CRILatticebright "XM-L"XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5  - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D

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KG_Tuning wrote:
My PT16 is measuring 950 lumens so is 10% off. My Emisar D4 XP-L HI is measuring 3500 lumens so is about 20% off. My DX80 is measuring 20000 lumens so is about 60% off making the calibrating tube redundant. I’ll try another HS1010A light meter to see if that’s the problem.

Do you have any Fenix lights or other more consistent lights for comparison? I am pretty sure others with this tube can compare the numbers.

So far all the readings you have mentioned sound correct but they are not very good for comparing to others.

You have to ignore the rated lumens on the lights and realize that most light manufactures lie about the ratings. As we have seen throughout this thread, the official ratings are simply wrong most of the time.

Know guns, know peace, know safety. No guns, no peace, no safety.

The ultimate result of shielding men from the effects of folly is to fill the world with fools. --Herbert Spencer , English Philosopher (1820-1903)

Texas Avenger Driver Series

My LED Test series - XP-L2 V5  - Nichia 219C 90+ CRILatticebright "XM-L"XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5  - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D

Easy comparison tool for all my LED tests

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After TA confirmed my readings seem right in a pm I can confirm the brighter the light you use on the TA calibrating tube the more the reading will be off, a 1000 lumen light will read around 800 lumens and a 100000 light will read around 50000 lumens the the thing is utter garbage people. £132 down the drain…

My 4K Flashlight reviews (DX80, X80-GT, X45vn, DT70, MF04 etc) - https://www.youtube.com/c/FLASHAHOLICS_GB

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Have you tested it with using a neutral density or other dimming filter in front of the meter. If the difference (lux ratio) between a low and high output light is different with the filter, the meter isn’t linear in the high end.

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Acebeam X45 – 8000 lumens
Acebeam EC50 Gen II – 2200 lumens
MecArmy PT16 – 920 lumens
Emisar D4 XP-L HI – 3600 lumens
Blf X5 Kronos – 920 Lumens
Imalent DX80 – 20000 lumens
Noctigon Meteor Nichia – 4550 lumens
Acebeam X80 – 15000 lumens
Astrolux MF01 cw – 7600 lumens
Olight S2R – 745 lumens
Manker Timeback II – 2000 lumens
DQG Tiny – 2200 lumens
Blf Q8 – 4800 lumens
TN40vn – 6500 lumens

All other testers reported more lumens especially on my lumen monsters, I have plenty of other lights to try too

My 4K Flashlight reviews (DX80, X80-GT, X45vn, DT70, MF04 etc) - https://www.youtube.com/c/FLASHAHOLICS_GB

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KG_Tuning wrote:
After TA confirmed my readings seem right in a pm I can confirm the brighter the light you use on the TA calibrating tube the more the reading will be off, a 1000 lumen light will read around 800 lumens and a 100000 light will read around 50000 lumens the the thing is utter garbage people. £132 down the drain…

Can you please post some examples? All of the examples you have posted so far are very reasonable. Maybe not what you want to see but very reasonable to real world ANSI lumens.

Do tell, where are you getting a 100k lumen light? I would love to see that!

Also you posted above that a 1000 lumen rated light (PT16) read 950 lumens, why are you now saying it reads 800?

Know guns, know peace, know safety. No guns, no peace, no safety.

The ultimate result of shielding men from the effects of folly is to fill the world with fools. --Herbert Spencer , English Philosopher (1820-1903)

Texas Avenger Driver Series

My LED Test series - XP-L2 V5  - Nichia 219C 90+ CRILatticebright "XM-L"XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5  - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D

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maukka wrote:
Have you tested it with using a neutral density or other dimming filter in front of the meter. If the difference (lux ratio) between a low and high output light is different with the filter, the meter isn’t linear in the high end.

Must be my meter if nobody else can’t get a good reading on 5000 lumen+ monsters, though TA thinks my readings are fine.

My 4K Flashlight reviews (DX80, X80-GT, X45vn, DT70, MF04 etc) - https://www.youtube.com/c/FLASHAHOLICS_GB

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/\ ….. Your Q8 looks about right, I have those. No idea about the others.

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Texas_Ace
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KG_Tuning wrote:
Acebeam X45 – 8000 lumens
Acebeam EC50 Gen II – 2200 lumens
MecArmy PT16 – 920 lumens
Emisar D4 XP-L HI – 3600 lumens
Blf X5 Kronos – 920 Lumens
Imalent DX80 – 20000 lumens
Noctigon Meteor Nichia – 4550 lumens
Acebeam X80 – 15000 lumens
Astrolux MF01 cw – 7600 lumens
Olight S2R – 745 lumens
Manker Timeback II – 2000 lumens
DQG Tiny – 2200 lumens
Blf Q8 – 4800 lumens
TN40vn – 6500 lumens

All other testers reported more lumens especially on my lumen monsters, I have plenty of other lights to try too

Great, some numbers to compare.

At a glace I do not have hardly any of those lights but the numbers all look VERY reasonable.

I do have a Q8 and I also get around 4600-4800 lumens with it depending on the batteries used.

Hopefully some other people with the sphere have some other lights to compare and we can find out if it is off or not.

The only reading that stands out as being abnormal is the X45, does seem odd for it to be reading that low when rated at 16k. Were the cells fully charged?

Know guns, know peace, know safety. No guns, no peace, no safety.

The ultimate result of shielding men from the effects of folly is to fill the world with fools. --Herbert Spencer , English Philosopher (1820-1903)

Texas Avenger Driver Series

My LED Test series - XP-L2 V5  - Nichia 219C 90+ CRILatticebright "XM-L"XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5  - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D

Easy comparison tool for all my LED tests

KG_Tuning
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Texas_Ace wrote:
KG_Tuning wrote:
After TA confirmed my readings seem right in a pm I can confirm the brighter the light you use on the TA calibrating tube the more the reading will be off, a 1000 lumen light will read around 800 lumens and a 100000 light will read around 50000 lumens the the thing is utter garbage people. £132 down the drain…

Can you please post some examples? All of the examples you have posted so far are very reasonable. Maybe not what you want to see but very reasonable to real world ANSI lumens.

Do tell, where are you getting a 100k lumen light? I would love to see that!

Also you posted above that a 1000 lumen rated light (PT16) read 950 lumens, why are you now saying it reads 800?

I topped the batteries up on every light

My 4K Flashlight reviews (DX80, X80-GT, X45vn, DT70, MF04 etc) - https://www.youtube.com/c/FLASHAHOLICS_GB

maukka
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I don’t see the difference getting bigger on higher output lights compared to my readings.

Your X80 and S2R are both about 25% lower than mine.

And there can be as much as 20% difference between the same model of flashlights. And probably even more on the higher output ones where every little bit including the batteries matter.

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Texas_Ace wrote:
KG_Tuning wrote:
Acebeam X45 – 8000 lumens
Acebeam EC50 Gen II – 2200 lumens
MecArmy PT16 – 920 lumens
Emisar D4 XP-L HI – 3600 lumens
Blf X5 Kronos – 920 Lumens
Imalent DX80 – 20000 lumens
Noctigon Meteor Nichia – 4550 lumens
Acebeam X80 – 15000 lumens
Astrolux MF01 cw – 7600 lumens
Olight S2R – 745 lumens
Manker Timeback II – 2000 lumens
DQG Tiny – 2200 lumens
Blf Q8 – 4800 lumens
TN40vn – 6500 lumens

All other testers reported more lumens especially on my lumen monsters, I have plenty of other lights to try too

Great, some numbers to compare.

At a glace I do not have hardly any of those lights but the numbers all look VERY reasonable.

I do have a Q8 and I also get around 4600-4800 lumens with it depending on the batteries used.

Hopefully some other people with the sphere have some other lights to compare and we can find out if it is off or not.

The only reading that stands out as being abnormal is the X45, does seem odd for it to be reading that low when rated at 16k. Were the cells fully charged?


Like I say under 5000 lumens they aren’t far off 10-20% over 5000 and it gets quite ludicrous, Im thinking too much light absorbsion

My 4K Flashlight reviews (DX80, X80-GT, X45vn, DT70, MF04 etc) - https://www.youtube.com/c/FLASHAHOLICS_GB

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maukka wrote:
I don’t see the difference getting bigger on higher output lights compared to my readings.

Your X80 and S2R are both about 25% lower than mine.

Interesting, how stable are the readings from these lights in the lower modes?

KG, I assume that the batteries are fresh off the charger when you took these readings? If not can you take some more readings with freshly charged cells to confirm that is not the problem.

Also some readings with the lights in the low modes would be a good test for linearity.

Know guns, know peace, know safety. No guns, no peace, no safety.

The ultimate result of shielding men from the effects of folly is to fill the world with fools. --Herbert Spencer , English Philosopher (1820-1903)

Texas Avenger Driver Series

My LED Test series - XP-L2 V5  - Nichia 219C 90+ CRILatticebright "XM-L"XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5  - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D

Easy comparison tool for all my LED tests

Texas_Ace
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KG_Tuning wrote:
Texas_Ace wrote:
KG_Tuning wrote:
Acebeam X45 – 8000 lumens
Acebeam EC50 Gen II – 2200 lumens
MecArmy PT16 – 920 lumens
Emisar D4 XP-L HI – 3600 lumens
Blf X5 Kronos – 920 Lumens
Imalent DX80 – 20000 lumens
Noctigon Meteor Nichia – 4550 lumens
Acebeam X80 – 15000 lumens
Astrolux MF01 cw – 7600 lumens
Olight S2R – 745 lumens
Manker Timeback II – 2000 lumens
DQG Tiny – 2200 lumens
Blf Q8 – 4800 lumens
TN40vn – 6500 lumens

All other testers reported more lumens especially on my lumen monsters, I have plenty of other lights to try too

Great, some numbers to compare.

At a glace I do not have hardly any of those lights but the numbers all look VERY reasonable.

I do have a Q8 and I also get around 4600-4800 lumens with it depending on the batteries used.

Hopefully some other people with the sphere have some other lights to compare and we can find out if it is off or not.

The only reading that stands out as being abnormal is the X45, does seem odd for it to be reading that low when rated at 16k. Were the cells fully charged?


Like I say under 5000 lumens they aren’t far off 10-20% over 5000 and it gets quite ludicrous, Im thinking too much light absorbsion

Like maukka said the light absorption should be linear (and is in my own testing).

It would also make no sense for it to read the Q8 spot on and be way off for a light only slightly brighter. A few percent maybe but not a massive change. Something else must be going on.

The biggest problem I see so far is comparing the numbers to the factory ratings. See the Haikelite story above, they had the light tested much lower then the official ratings. Official ratings now days mean almost nothing.

Are all of the cells in the lights 100% freshly charged. High powered lights are very sensitive to changes in battery voltage and low cells can easily cause low readings. Also you are using high drain, unportected cells in them correct? Like 30Q or VTC6?

Know guns, know peace, know safety. No guns, no peace, no safety.

The ultimate result of shielding men from the effects of folly is to fill the world with fools. --Herbert Spencer , English Philosopher (1820-1903)

Texas Avenger Driver Series

My LED Test series - XP-L2 V5  - Nichia 219C 90+ CRILatticebright "XM-L"XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5  - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D

Easy comparison tool for all my LED tests

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On most iffy diy systems the X45 and X80 come in way too low due to the sheer flood, I had to get around it with my system by moving the X45/80 forwards to impact as a thrower. The TA system is like a Zoomie flashlight that looses lumens as you zoom to a tighter beam as most of the light is absorbed in the flashlight’s walls. My Emisar D4 XP-L HI reads higher in the TA system than my Emisar D4 XP-L HI with diffused optics.

My 4K Flashlight reviews (DX80, X80-GT, X45vn, DT70, MF04 etc) - https://www.youtube.com/c/FLASHAHOLICS_GB

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Texas_Ace wrote:
KG_Tuning wrote:
Texas_Ace wrote:
KG_Tuning wrote:
Acebeam X45 – 8000 lumens
Acebeam EC50 Gen II – 2200 lumens
MecArmy PT16 – 920 lumens
Emisar D4 XP-L HI – 3600 lumens
Blf X5 Kronos – 920 Lumens
Imalent DX80 – 20000 lumens
Noctigon Meteor Nichia – 4550 lumens
Acebeam X80 – 15000 lumens
Astrolux MF01 cw – 7600 lumens
Olight S2R – 745 lumens
Manker Timeback II – 2000 lumens
DQG Tiny – 2200 lumens
Blf Q8 – 4800 lumens
TN40vn – 6500 lumens

All other testers reported more lumens especially on my lumen monsters, I have plenty of other lights to try too

Great, some numbers to compare.

At a glace I do not have hardly any of those lights but the numbers all look VERY reasonable.

I do have a Q8 and I also get around 4600-4800 lumens with it depending on the batteries used.

Hopefully some other people with the sphere have some other lights to compare and we can find out if it is off or not.

The only reading that stands out as being abnormal is the X45, does seem odd for it to be reading that low when rated at 16k. Were the cells fully charged?


Like I say under 5000 lumens they aren’t far off 10-20% over 5000 and it gets quite ludicrous, Im thinking too much light absorbsion

Like maukka said the light absorption should be linear (and is in my own testing).

It would also make no sense for it to read the Q8 spot on and be way off for a light only slightly brighter. A few percent maybe but not a massive change. Something else must be going on.

The biggest problem I see so far is comparing the numbers to the factory ratings. See the Haikelite story above, they had the light tested much lower then the official ratings. Official ratings now days mean almost nothing.

Are all of the cells in the lights 100% freshly charged. High powered lights are very sensitive to changes in battery voltage and low cells can easily cause low readings. Also you are using high drain, unportected cells in them correct? Like 30Q or VTC6?

The Q8 is throwier than the similar rated D4 XP-L so records 1300 lumens more than an expected 500 lumens difference and circa 2000 more than the diffused D4 XP-L!!!!

My 4K Flashlight reviews (DX80, X80-GT, X45vn, DT70, MF04 etc) - https://www.youtube.com/c/FLASHAHOLICS_GB

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At least the diffused Carclo triple optics (10509) will decrease output about 10% compared to the clear optics (10507).

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KG_Tuning wrote:
On most iffy diy systems the X45 and X80 come in way too low due to the sheer flood, I had to get around it with my system by moving the X45/80 forwards to impact as a thrower. The TA system is like a Zoomie flashlight that looses lumens as you zoom to a tighter beam as most of the light is absorbed in the flashlight’s walls. My Emisar D4 XP-L HI reads higher in the TA system than my Emisar D4 XP-L HI with diffused optics.

This is exactly what I was about to say:

maukka wrote:
At least the diffused Carclo triple optics (10509) will decrease output about 10% compared to the clear optics (10507).

The diffusion causes a higher loss of photons in the optic itself so less light makes it out the front of the light.

Also, I am not sure what you are talking about with the X45/X80 to impact like a thrower?

I can not figure out what you mean?

The light should be basically level with the centering ring, it should not be pushed into the sphere or it will indeed vastly reduce the readings.

Know guns, know peace, know safety. No guns, no peace, no safety.

The ultimate result of shielding men from the effects of folly is to fill the world with fools. --Herbert Spencer , English Philosopher (1820-1903)

Texas Avenger Driver Series

My LED Test series - XP-L2 V5  - Nichia 219C 90+ CRILatticebright "XM-L"XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5  - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D

Easy comparison tool for all my LED tests

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KG_Tuning wrote:
The Q8 is throwier than the similar rated D4 XP-L so records 1300 lumens more than an expected 500 lumens difference and circa 2000 more than the diffused D4 XP-L!!!!

Do you think that a 4× 18650 4x XP-L HD will be anything close to the same output as a 1× 18650, 4x XP-L HI light with basically the same driver?

The Q8 should be much bright and it is, the number line up very well with what I would expect.

Know guns, know peace, know safety. No guns, no peace, no safety.

The ultimate result of shielding men from the effects of folly is to fill the world with fools. --Herbert Spencer , English Philosopher (1820-1903)

Texas Avenger Driver Series

My LED Test series - XP-L2 V5  - Nichia 219C 90+ CRILatticebright "XM-L"XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5  - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D

Easy comparison tool for all my LED tests

Texas_Ace
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For the record, if there is indeed proven to be an issue with your sphere, I will make it right.

That said the numbers seem to be very reasonable so I want to wait for some other peopel to see this and hopfully be able to get some comparison numbers.

For this to happen the cells and charge status of them need to be known.

Can you please list what cells you are using and if they are freshly charged?

Know guns, know peace, know safety. No guns, no peace, no safety.

The ultimate result of shielding men from the effects of folly is to fill the world with fools. --Herbert Spencer , English Philosopher (1820-1903)

Texas Avenger Driver Series

My LED Test series - XP-L2 V5  - Nichia 219C 90+ CRILatticebright "XM-L"XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5  - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D

Easy comparison tool for all my LED tests

KG_Tuning
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Texas_Ace wrote:
KG_Tuning wrote:
On most iffy diy systems the X45 and X80 come in way too low due to the sheer flood, I had to get around it with my system by moving the X45/80 forwards to impact as a thrower. The TA system is like a Zoomie flashlight that looses lumens as you zoom to a tighter beam as most of the light is absorbed in the flashlight’s walls. My Emisar D4 XP-L HI reads higher in the TA system than my Emisar D4 XP-L HI with diffused optics.

This is exactly what I was about to say:

maukka wrote:
At least the diffused Carclo triple optics (10509) will decrease output about 10% compared to the clear optics (10507).

Also, I am not suer what you are talking about with the X45/X80 to impact like a thrower?

I can not figure out what you mean?

The light should be basically level with the centering ring, it should not be pushed into the sphere or it will indeed vastly reduce the readings.

I’ve done the tests textbook like you wished, they get similar readings to ceiling bounce tests. In which the high lumen lights don’t seem to get as close to manufacturers claims, especially floody lights. They do if I lift the light towards the ceiling to match the hotspot of the light I’m getting a figure from. I.e. The DT70 gets 13000 and the X45 gets 11000 by lifting the light to match the spill area I got it to the widely accepted 14500 region.

All I can think is the more light you feed the TA tube the more light it retains, especially with all the diffusers, bounce back, twists and diffuser material, obviously the tube will favour certain beams and lumen ranges.

Though you doubt it it could be my meter playing up though, not being efficient??

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KG, I’m just gonna look at one light at a time.

On that X45, turbo is rated at 9,000 lm and turbo max is 16,500 lm.

Are you reading 8,000 lm on turbo max?

8000 lm seems like it might be on the first turbo setting.

If your reading 8000 lm on turbo max, what does it read on the other turbo setting, 4000 lm?

I would expect Acebeam to be a bit closer to spec than most other brands.

Also, as just a general thought, batteries with high internal resistance (like protected cells) or cells like Panny B that can’t do high loads can definitely prevent a light from doing it’s best output.

Like if you had 4 Panasonic NCR18650B 3400mah in your X45 then it would probably not be able to go into the turbo Max mode. Just as an example.

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KG_Tuning wrote:
Texas_Ace wrote:
KG_Tuning wrote:
On most iffy diy systems the X45 and X80 come in way too low due to the sheer flood, I had to get around it with my system by moving the X45/80 forwards to impact as a thrower. The TA system is like a Zoomie flashlight that looses lumens as you zoom to a tighter beam as most of the light is absorbed in the flashlight’s walls. My Emisar D4 XP-L HI reads higher in the TA system than my Emisar D4 XP-L HI with diffused optics.

This is exactly what I was about to say:

maukka wrote:
At least the diffused Carclo triple optics (10509) will decrease output about 10% compared to the clear optics (10507).

Also, I am not suer what you are talking about with the X45/X80 to impact like a thrower?

I can not figure out what you mean?

The light should be basically level with the centering ring, it should not be pushed into the sphere or it will indeed vastly reduce the readings.

I’ve done the tests textbook like you wished, they get similar readings to ceiling bounce tests. In which the high lumen lights don’t seem to get as close to manufacturers claims, especially floody lights. They do if I lift the light towards the ceiling to match the hotspot of the light I’m getting a figure from. I.e. The DT70 gets 13000 and the X45 gets 11000 by lifting the light to match the spill area I got it to the widely accepted 14500 region.

All I can think is the more light you feed the TA tube the more light it retains, especially with all the diffusers, bounce back, twists and diffuser material, obviously the tube will favour certain beams and lumen ranges.

Though you doubt it it could be my meter playing up though, not being efficient??

Ceiling bounce tests ONLY work if you take the readings in exactly the same method, in the same room, with the same things in the room. Moving the light higher is skewing the numbers, the light simply reads lower then the rating.

So if the numbers agree when you take the ceiling bounce test from the same place, then that confirms that the sphere is reading correctly.

The reason we use a sphere is to get readings between lights that show the actual numbers, not to confirm the readings that they came with.

Also, ditto Jasons question, I was about to post the same thing. Are you sure the X45 is really on turbo max? That would make a lot more sense if it was not.

Can you please list the cells you are using and if they are fully charged?

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Texas_Ace wrote:
For the record, if there is indeed proven to be an issue with your sphere, I will make it right.

That said the numbers seem to be very reasonable so I want to wait for some other peopel to see this and hopfully be able to get some comparison numbers.

For this to happen the cells and charge status of them need to be known.

Can you please list what cells you are using and if they are freshly charged?

X45 cells are the Acebeam ones
DX80 cells is proprietary
D4/TN40vn cells are VTC5A
Q8/MF01/Meteor cells are 30Q’s
DQG Tiny cell is AW
PT16/Timeback II use an 18350 Aspire cell
X5 uses a Nitecore 650mah cell
X80 uses the Acebeam cells
Gen II uses the Acebeam cell

I try to use the best or what they come with. All the batts were fully charged for that list.

The X45/80 needs to be checked by someone as they fire most of their lumens straight to the tubes sidewalls.

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I calibrated the TN42 at 2200 lumens using the ceiling bounce phone app, the TN40vn with VTC5A hit over 9000 lumens when compared, on your test it managed 6500, vinh measured it at 8750 if memory serves.

Yes, I turbo maxed the X45 and X80, full batts from cold.

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Since I don’t have a calibrate light, I have to use the stock fenix tk15 1000 lumen for educated lumen.. so I got 1060 lumen @ 20 seconds.. I am fine with it…

C02_C20_D5-8_D07-40_FC-_A463-6_E1_B2_B1092_C8

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Newlumen wrote:
Since I don’t have a calibrate light, I have to use the stock fenix tk15 1000 lumen for educated lumen.. so I got 1060 lumen @ 20 seconds.. I am fine with it…

C02_C20_D5-8_D07-40_FC-_A463-6_E1_B2_B1092_C8

Do you have a Noctigon, they should really fire in the 6500-8500 range depending on led.

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Take a high output light and measure the difference between a high and low mode on the same light in the tube and using the ceiling bounce method. Is the ratio the same? If it is, the meter is linear.

The tube as a physical object will always be linear with the same light, unless it actually deforms (melts). Although it is always possible for an integrating device to have errors with extremely floody or throwy lights.

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