robby69 said: Are these "that" much brighter than these? http://www.amazon.com/Techlite-Master-High-Intensity-Tactical-Fl... I bought a set of those and I thought they were ridiculously bright at 200 lumens Just hard to think they could be 5 times brighter, or even 3 times brighter?. Perception of light isn't linear, it's exponential. So if you double the power it only looks a bit brighter. 5x brightness will be darn bright, but not mind blowingly as you might think/hope.
Senior Member - 1K
posted: Nov. 3, 2013 @ 2:17a
Good light. I have this light. I paid a lot more 2 years ago. Be Aware that this one uses 5 Modes: Bright, Medium, Low, Strobe, SOS. Zoom requires twisting. I got it for the SOS since I use it for sailing.
posted: Nov. 3, 2013 @ 6:49a
gallymimus said: robby69 said: Are these "that" much brighter than these? http://www.amazon.com/Techlite-Master-High-Intensity-Tactical-Fl... I bought a set of those and I thought they were ridiculously bright at 200 lumens Just hard to think they could be 5 times brighter, or even 3 times brighter?. Perception of light isn't linear, it's exponential. So if you double the power it only looks a bit brighter. 5x brightness will be darn bright, but not mind blowingly as you might think/hope. Sigh, flaky editor or megalomaniac moderators. I SAID that this would apply to the apparent luminosity of the light itself or the brightness of a specific nearby object, but the main point is to illuminate a larger volume of space (see further in a wider area). So the practical effect of 5x lumens should be much more than the logarithmic change in perceived brightness. If not, the issue may be incorrect flashlight lumen ratings or weak batteries (maybe 3xAAA instead of 1x18650). I think sellers rely on the effect you describe to substitute cheaper LED boards without most people noticing.
posted: Nov. 3, 2013 @ 9:07a
Notice, the type of flashlight changes when you click to add the battery and charger. Without, it is the "Ultrafire" 3-mode (high, low, strobe) CREE XML T6 with 900+ Lumen output. When you add on the battery and charger, it becomes "Afunta" WF-502B CREE XM-L T6 5-Mode 1000 Lumens with 5-modes. And they're sold by two different companies.
In addition, the "Flashlight Kit2 " is sold by yet a different company, but it with the "Ultrafire" name. Seems comparable to the Afunta style/brand, minus that it isn't listed as being shock-proof like the Afunta style is. (Who knows if either or both actually are though considering flashlights.)
I have several of these type of flashes. People should know they are not 1000 Lumens as advertised, but they are much brighter than other flashes. I would recommend buying the model that can use both 3 AAA batteries and the 18650 battery. I do have a few 18650 battery on hand, but in case of long period black outs or in a camping situation AAA's are the only way to go. Please do note the light output when using AAA's is not as bright as using 18650.
posted: Nov. 3, 2013 @ 4:39p
bad deal, I can find this item in a 99 cents store. It is not worth for buying this.
posted: Nov. 3, 2013 @ 6:13p
xiaoli931231 said: bad deal, I can find this item in a 99 cents store. It is not worth for buying this.
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