led lenser t7

[dban]

just picked up the t7. thank yall very much for the comments. i've learned a lot from this board in the last 4 days that i've known of its existence. you can learn alot from reading and other people's experiences and all the numbers and photos. thank you. after trying it out....its exactly what i needed. while the focusing is not what many people want, it worked out better for me than i thought it would. i was expecting to use it "focused" all the time but found out that having a wider angle helps sometimes. i definitely like the focus aspect of the light. it almost seems like to me that while it may not work for everyone, this light is a task (ok 2 task) specific light. the tight focused beam has very little spread which i like. i would recommend the light to anyone who has those specific criteria that i did. also, it was $65 at lowes with a belt-hook carry case. once again, thank you.

 

[Pabs D]

well, good on you for trying it out and realizing it matched your needs. seeing through the negativity and killjoy attitudes can be PITA. but it's all in good childish fun right mates? :poke:

 

[phantom23]

He likes to troll, take a look at all the LL threads and you'll see what I mean.

You're trolling now. It's been said already: old models - we know what you mean, new models (Px series) are much better.

 

[L.E.D.]

Everyone keeps mentioning how well it throws. Since when is throw the only measure of how good a light is? I can go down to WalMart and spend $15 on a spotlight that will out-throw any of the lights mentioned here. There are a lot of different aspects that go into what makes a quality light, and having a novel focusing system is but one of dozens.

Don't put words into my mouth, I never said throw is the only thing that makes a light, just stating the fact that it indeed outthrows any of the Fenix line of lights, and throw is actually pretty important, depending, as well as beam quality. My P14 throws a perfect tight circle, after I recalibrated the optic (unscrewed the retaining ring on the lens and got the lens in the position where I see the best beam), as well as a perfect flood without a blinding hotspot to ruin it. It's also reliable, durable as hell, and build quality and overall design are great.

 

[deusexaethera]

I have a 0.1W laser pointer that can out-throw anything your punk *** can scratch up. What now, son?

Throw is only useful if you're looking at one thing and it's far away. That might be important if you know the thing you're looking for and you know it's far away, but usually when it's dark you have to find what you're looking for first. For that, you need spill.

Besides, what if the thing you're looking at moves quickly out of your hotspot? With not even a faint bit of illumination around it, you won't know which direction to move the light in. I can't think of a single instance (within reason) in which I would want all throw.

Also, did I mention the power regulator is a cheap trick?

 

[L.E.D.]

I have a 0.1W laser pointer that can out-throw anything your punk *** can scratch up. What now, son?

My "punk ***", "son"? Who the hell do you think you're talking to, you don't know a damn thing of what I'm scratching up (MOSPOS), and almost an hour and a half to 50% might as well be semi-regulated. That little middle finger smiley, middle finger right back at ya, dumbass @55hole.

 

[Marduke]

and almost an hour and a half to 50% might as well be semi-regulated.

Regulation depends on the slope of the discharge curve, not the distance between two predetermined points.


In a direct drive light, the best you can get is "pseudo regulation" from a chemistry with low internal resistance, such as NiMH or lithium, both of which are explicitly FORBIDDEN by LL.

 

[L.E.D.]

Regulation depends on the slope of the discharge curve, not the distance between two predetermined points.

Yeah, and the last predetermined point when combined with the "to 50%" part describes the slope.

 

[Marduke]

Yeah, and the last predetermined point when combined with the "to 50%" part describes the slope.

A nearly linear line between 100% and 50% is NOT regulated in any way. Percentage change in output per unit time would accurately describe any regulation, and the discharge curve of alkalines in direct drive fails any definitions.

 

[L.E.D.]

A nearly linear line between 100% and 50% is NOT regulated in any way. Percentage change in output per unit time would accurately describe any regulation, and the discharge curve of alkalines in direct drive fails any definitions.

Never said it was regulated, it's just nice that it's not the typical exponential drop to 50% in the first several minutes.

 

[Marduke]

Never said it was regulated, it's just nice that it's not the typical exponential drop to 50% in the first several minutes.

No, you said "semi-regulated", which is is not since it is direct drive.


But it does have that drop (see above graphs)

 

[L.E.D.]

No, you said "semi-regulated", which is is not since it is direct drive.


But it does have that drop (see above graphs)

No, I said "it MIGHT AS WELL BE semi-regulated", I didn't say it WAS, and no, it doesn't have that drop to 50% in the first several minutes, it hits 50% after over an hour. The exponential drop in the first few minutes is there alright, but it's still well above 50%. On alkalines, it's got about the same-looking slope as an Inova Radiant AA on alkalines. Isn't the Radiant semi-regulated?

Again, compare it to the graph here: http://flashlightreviews.com/reviews/inova_radiant_aa.htm

I'd say that the T7's curve fits the description of "it does not dim nearly as rapidly as a direct-driven alkaline light", which is along the lines of what Doug / Quickbeam says of the Inova's runtime-output. Is that really just a resistor in the head??

 

[Marduke]

No, I said "it MIGHT AS WELL BE semi-regulated", I didn't say it WAS, and no, it doesn't have that drop to 50% in the first several minutes, it hits 50% after over an hour. The exponential drop in the first few minutes is there alright, but it's still well above 50%. On alkalines, it's got about the same-looking slope as an Inova Radiant AA on alkalines. Isn't the Radiant semi-regulated?



Again, compare it to the graph here: http://flashlightreviews.com/reviews/inova_radiant_aa.htm

I'd say that the T7's curve fits the description of "it does not dim nearly as rapidly as a direct-driven alkaline light", which is along the lines of what Doug / Quickbeam says of the Inova's runtime-output. Is that really just a resistor in the head??

The Radiant's slope is approximately 5 times shallower than a direct drive alkaline power light (the graph you linked above). So no, it's not the same.

In fact, they are so different, if you overlayed them on the same scale, it would look like a lowercase cursive "t" laying on it's side.

 

[deusexaethera]

My "punk ***", "son"? Who the hell do you think you're talking to, you don't know a damn thing of what I'm scratching up (MOSPOS), and almost an hour and a half to 50% might as well be semi-regulated. That little middle finger smiley, middle finger right back at ya, dumbass @55hole.

Jesus Christ on a stick, how obvious do I have to make my humor before you (old) people recognize it for what it is? It was supposed to be ridiculous. Or did you think I was somehow being serious with a smiley called "e-thug.jpg"?

I'm afraid you leave me no choice but to make you read irreverent webcomics.

Lighten up. It's only the Internet. Son.

(my laser pointer still out-throws your MOSPOS.)

 

[toby_pra]

:crackup::crackup::crackup:

 

[phantom23]

LedLenser regulation (semi-regulation/direct driving):

LedLenser Hokus Fokus - direct driven for sure:

http://fred-flashlights.tacomall.com.tw/DATA/coast3aaa/coast.htm

Do you see any difference?

 

[Marduke]

LedLenser regulation (semi-regulation/direct driving):


LedLenser Hokus Fokus - direct driven for sure:

http://fred-flashlights.tacomall.com.tw/DATA/coast3aaa/coast.htm

Do you see any difference?

Yep, the difference 4x vs 3x makes in DIRECT DRIVE.

 

[radu1976]

Wow, what a difference ...!
The 7438 reches 50% of the original brightness after only 40 min...

I had this 7438.
I used to compare it to INOVA X03/T3 TIROS.
I had the feeling of the same throw, maybe a bit better throw for the LL7438 .
I know that a TIROS INOVA puts about 2,000 lux . LL7438 puts almost 3 times initially. But they seem to be quite equal in throw...I can't explain that :confused:

Anyhow I am happy I got rid of that light and I have a T7 incoming )

 

[L.E.D.]

Lighten up. It's only the Internet. Son.

(my laser pointer still out-throws your MOSPOS.)

No, actually your laser pointer doesn't outthrow the aspheric build. Son. In a post above, I already said throw isn't everything.

 

[Ice]

First I'd like to say that I just left a forum because most people seemed biased there and everyone with a different opinion got insulted and banned. I'm extremely gratefull that it's very different here (at least 99% of the time)! :thumbsup:


Concerning L.E.D.'s statement "it might as well be semi-regulated", I have to say that the T7's runtime graph indeed resembles much more the semi regulated one and looks very different from the unregulated one. I really can't imagine how anyone could see that differently...

I'd like to write a few positives and negatives about the T7 as I see it:

+ working focus with a very visible difference
+ uses common batteries
+ seems well built
- not really regulated
- can't use lithium AAA batteries
- a little large for my taste
- focus setting gets too easily changed

I'd really be interrrested in a focusing led light from SureFire, but it seems they have given up on that...

PS:
If you could get your favourite light in the same size with the same beam pattern but with the added possibility to focus the beam a little for long distances (and with a focus that does not get too easily changed), would not everyone be happy about that?
(Yes, I know, that's hardly possible... :))