Updated !
Link: http://www.youtube.com/watch?v=nXP8vN20LBM
Please give me some advice for this video, then i can make a better video for the members !
Any advice are welcome ,thanks in advance !
For more video ,you can go to my Youtube Channel .
Didn't have any advice for my Video ?
It is very perfect ? LOL !
Trustfire X6 have cut down the price .
Still waiting for tailcap reading...
Trustfire X6 SST-90 flashlight VS Olight SR50 beamshot compare
http://www.youtube.com/watch?v=7En_F2qXAS8
Trustfire SST 50 VS Olight SR50 beamshot compare
http://www.youtube.com/watch?v=Q2m4sCmQhX0
The best way to do a beamshot comparison would be to take a side-by-side photo with manual exposure stopped down until the hotspots do not saturate.
When you use auto-exposure like that, the camera will try to expose such that stuff in the flood area is not too dark, which results in the hotspot saturating the sensor (which have limited dynamic range compared to human eyes) so it's impossible to tell which is brighter.
I have to add to this that i had that Trustfire SST-50 ordered from lightake.com. It measured only about 3000lux in my lightbox. As comparison my Mag85 reads about 5300lux and WF-1300L is around 5000lux
So it won't go near 1300lumen. Also tailcap reading was 1.8 - 2.0A
So again i'm highly suspicious about that X6...
That should be almost 4A to the emitter. Lux in and of itself doens't necessarily tell the whole story, as it's only a measure of throw, not output.
I can tell you, for sure it wasn't that bright what they advertise
My WF-1300L blows it away clearly
Nope. Lux is simply a measure of the quantity of energy on a given area. 1 lux is 1 lumen per square metre. It is not distance dependent, hence a throw measurement is a number of lux at a given distance.
In a lightbox where the intent is to integrate all the output, you get a number of lux which is the "averaged out" number of lumens per square metre under those conditions.
If the box is calibrated to absolute units then you can read lumens directly off the integrating device. This is harder than it seems.
Nope. Lux is simply a measure of the quantity of energy on a given area. 1 lux is 1 lumen per square metre. It is not distance dependent, hence a throw measurement is a number of lux at a given distance.
The implication here is that we're only comparing lux at a consistent distance. http://budgetlightforum.cz.cc/node/694#comment-12685
I would certainly hope juhi measured them at the same distance.
Another variable is that these light meters are said to be calibrated to be most sensitive and accurate in the 4200K range. The higher up the scale you go, the less sensitive and more inaccurate the readings become. If all the test subjects had the same tint, you could do direct comparisons.
are said to be calibrated to be most sensitive and accurate in the 4200K range
The SI base units of candela/lumen/lux are "luminous" instead of "radiant", which means they are all calibrated to the human eye. So if a light meter is indeed a "lux" meter, it should presumably weight more or less against the spectral response of the photopic luminosity function, which if we need to translate looks to be best approximated by about a 5000-6000K black body (sun is closer to 6kK).
However, the cree/led white output is actually not much like the black body function at all. I didn't bother with graphing it, but it looks like the typical 6000K+ cree gives up significant chunks of red/yellow to fill in the blue part of the photopic function. Probably worth it for something approaching mesopic vision, but makes colors look crap as usual.
BOB were selling it for $47, so i odered one, but got a email today:
My apology that due to a disruption in the production line, the
factory is unable to confirm the availability of the product you have
ordered.
1 x TrustFire X6 5mode Luminus SST-90 LED Aluminum Flashlight (E54037) =$47.00
In view of your situation, please advise if we can offer you a refund
of the item(s) or if you want to change to something else.
Kindly email us again if you need further assistance.
Regards,
Yuan
Customer Support
www.BestOfferBuy.com
Its the Chinglish way of saying they screwed up and cant sell it at that price without losing their shirts. In the U.S., we call it "lying". That would have been a slick deal if the sale went through.
They have shipped
1 x TrustFire X6 5mode Luminus SST-90 LED Aluminum Flashlight (E54037) =
$47.00 ($42.30)
1 x Aurora SH-034 Stainless Steel Cree Q5-WC 220-Lumen LED Flashlight
(1*16340) (E44527) = $12.90 ($11.61)
With Tracking Number
Total cost $53.91 with 10 % discount
I will have to wait and see if I get it
I must first apologise to everyone for not telling about Trustfire x6 deal for $47. The farce that happened with the Solarorce SS for $23 at BOB and no-one got it. I wanted to go under the radar to see if they will ship it, but got an email stating that I cannot have due to production problems. I did not reply to this email and got shippiong conformation email today
I'm not to sure what they are sending, I'll have to wait.
Sorry Guys.
No worries - but I am astonished that they shipped one for a third of the price! Wonder if they still offer it at that price?
Nope - it is now $155 again.
That's a good price on the Aurora light too - I am delighted with my one of those, it is one of the the best built, if not the best built light I own.
I bought the Aurora because you recommended it Don, I hope it's good.