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По умолчанию ReviewTheLight: Thrunite TN30v2

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Thrunite has updated their previous version of the triple-emitter TN30 for increased brightness and efficiency, changing the emitters from XM-L to XM-L2. As one of the few large lights with a control ring, the TN30v2 is quite a light.


Thanks to Thrunite for providing the TN30v2 for review.


I’ll be reviewing the TN30v2 in two sections: first, I’ll discuss the light objectively (the facts about the light itself), then I’ll discuss the light subjectively (my impressions about the light's performance when used for specific applications). If you have any other specific applications you'd like the light tested for, let me know and I'll see what I can do.

Video Review

Below is a video review of the TN30v2. Due to my old image hosting site closing down, I've got new restrictions on image uploads and have replaced the "Construction" section of my reviews with a more detailed video review.



Прямая ссылка на видео YouTube


This video is available in 1080p HD, but defaults to a lower quality. To select the playback quality click the settings button (looks like a gear) after you've started the video.


Objective

Manufacturer's Specifications

Price: 156 USD





Dimensions




Plus, here's a few shots with some good detail.




User Interface

The Tn30v2 has a very simple user interface, using the rear mechanical switch and the control ring on the head.

The rear switch turns the light on and off - press half way for momentary on, press all the way for constant on until the switch is pressed again.

The control ring sets the output of the emitters, with an arrow on the ring pointing to descriptions on the body. In the center is a Standby setting, where the emitters are off and the light uses minimal standby power. Turning the arrow to the left turns the light on at Max brightness, and turning it further left decreases the brightness in several steps until it reaches minimum brightness. To the right of Standby is the Strobe mode.


Action Shots

You can click on any of these shots to see them full size.

BeamSlice


MugShot


Light in Hand


White Wall (Low, Medium, High)
ISO 100, f/3.5, 1/20"


Indoor Shots (Low, Medium, High)
ISO 100, f/3.5, 1"


Outdoor Shots (
Low, Medium, High)
ISO 100, f/3.5, 2.5"


Long-Range Shots (
High)
ISO 100, f/3.5, 5"



Performance

Submersion: I submersed the TN30v2 under a foot of water for about an hour, clicking the switch several times and rotating the ring. I found no evidence of water entering or damaging the light.

Heat: On Max brightness, the TN30v2 gets hot in about 10 minutes, and at the half hour mark begins to cool down.

PWM: Using my camera, I can detect pulse width modulation on only the lowest output of the TN30v2, and no modes have PWM visible in any way to the unaided eye.

Drop: I dropped the TN30v2 from about a meter onto various surfaces (including grass, carpet, dirt, and hard wood), and found no cosmetic or functional damage.

Reverse Polarity Protection: The TN30v2 has a battery carrier that is designed to work when inserted in either direction, but the batteries must be inserted into the carrier in the correct direction.

Over-Discharge Protection: I can find no mention by Thrunite of over-discharge protection on the TN30v2, but there is a noticeable decrease in brightness near the end of the run so that's the signal to recharge the batteries.


Spectral Analysis


All light that we see as white is actually made up of several different colors put together. The relative intensities of the different colors in the mix are what determine the tint of the white we see. For example, cool white LED's have a lot of blue, and warm white LED's have more red or yellow. This measurement was done on a home made spectrometer. The plot below the picture is corrected for the spectral sensitivity of the human eye. Note: the peak in the 900nm region doesn't really exist, it's a piece of the second-order spectrum that's showing up here because of the high intensity of the light source.

Output and Runtime


ANSI FL-1 runtime ratings are the time it takes for a light to fall to 10% of it's original output (counting from 30 seconds after turning the light on).

The vertical axis of the graphs below represents a relative brightness measurement using a home made light box. The horizontal axis is time in hours:minutes:seconds. Runtimes are stated in hours:minutes:seconds. These graphs may be truncated to show detail.

Mode Comparison











Throwing Distance

ANSI FL-1 standard for stating a light's throwing distance is the distance at which the peak beam intensity (usually at the center of the beam) is 0.25 lux. I calculate throwing distance and candela (lux at 1 meter) by measuring peak beam intensity at five different distances and using the formula lux*distance^2=constant.


Peak Beam Intensity: 63398 m
Throw Distance: 504 m


Subjective Review

Quick break down:

+ Control ring
+ Excellent range of outputs
+ Standby mode on ring
+ Cutout tail design
+ Good grip on ring
+ Battery carrier can go either way
+ Not too heavy for it's size
+ Very good regulation

- Large size
- Battery carrier instead of solid body
- Not measured to reach spec'ed output

The TN30v2 is a beast light. Let's start with my favorite thing: the control ring. I'm a sucker for any light with a control ring. It is hands down the best user interface style I've seen, more intuitive and simple than any other system except for a single brightness on/off switch. At any time you can quickly increase or decrease the brightness without having to go through modes you don't want to, and you don't have to remember any fancy manipulations to do so. You can hand the light to a friend or coworker and tell them "turn the ring to control it" and the can instantly figure it out. So far, I haven't seen anything that surpasses the control ring.

Next, in the TN30v2 that control ring is put to excellent use. Large lights with a control ring are rare, so that alone sets this light in a special class. On top of that, Thrunite's given this thing a range that moves from 1 lumen to thousands of lumens. I can't describe how useful this is. If you're carrying a large light like this, then chances are that most of the time you'll want one of the higher brightness settings (otherwise you'd likely be carrying something smaller, why bother with something so large?). However, even when you're in a situation where you're using a large light, there are always times when you'll want to use less light for a moment (to read a nearby sign or to look in your bag to find something for example) and if your large light can't dial down the brightness, you'll have to either pull out a smaller light or blind yourself. So, to see a range this good in the TN30v2 makes me really excited. In addition, the control ring includes both Standby and Strobe on the control ring. This means that you won't have to shift your grip to turn the light off for moment, you can just dial the control ring to Standby. Also, the Strobe is placed such that it's available when you want it, but not often activated by accident.

One of the few negatives for the TN30v2 is it's large size. With current technology, you're going to have to have a large multi-emitter and multi-battery light if you want this kind of output for any usable length of time, and the size is also necessary for the mass required to absorb the heat put out by the emitter. LED's are much more efficient than their predecessors, incandescent bulbs, but they still put out heat, and at these levels the heat is significant. The TN30v2 has heat dissipation fins on the head to move heat into the air, and a lot of metal to absorb the heat and move it away from the emitter. Unfortunately, this means a large size. Also, with the TN30v2 in particular, the head is even larger so that each of the three emitters can be given a large enough reflector portion to focus the light a bit and give it some decent throw. Some other lights in this class opt to make the head smaller to save on space, and the cost is that it becomes a dedicated flooder.

Another tradeoff in the TN30v2 is the battery carrier. I have mixed feelings on the battery carrier idea, and here's why: a batter carrier is less sturdy than an integrated body slot design, but much lighter. Multi-cell lights that have a solid body with holes drilled out for the batteries have a lot more mass, and you can bet that chuck of metal isn't going to bend if you drop it, where a battery carrier might easily get misshapen if dropped. However, all that metal can make a large light get real heavy real fast. So, it's up to you to decide where you stand on this, but I generally prefer the extra sturdiness of an integrated design over the lightness of a battery carrier, because the extra weight doesn't tend to bother me much. I do appreciate the TN30v2 however, because they smartly designed their battery carrier so that it could be inserted into the light in either direction and still work. However, you still have to make sure the individual batteries are facing the right way within the carrier.

Thrunite did well with the TN30v2 to make sure that all the little details worked together. The output regulation is very good even on the high modes, the control ring had good grip on it so that it's easy to operate even when cold or wet, the tail is designed so that it can do a stable tailstand even with the lanyard attached, the cutouts allow easy access to the switch, the control ring is marked and labeled, the body is knurled, the reflector has some very light texture to smooth out the intersection of the three beams, etc.

You may notice that the output I measured for the max mode is less than what Thrunite specifies. Unfortunately, my MacBox isn't calibrated at that high of a range and I have to trust the intrinsic linearity of the photodiode I've used, which can only be trusted so far. I'm not sure what other reviewers have measured for this light, but it's likely the true value is somewhere between what I've measured and what Thrunite claims. You can also note that on all other modes Thrunite's claims are very close to what I measured.

Overall, the TN30v2 is an excellent light, and has become my favorite large light that isn't a dedicated thrower. The control ring is well implemented to give the light a great range of well-regulated output modes, and few lights can even compared as alternatives. If you're looking for a large and versatile high output light, the TN30v2 is very good option.


Long Term Impressions
I'll fill this part in after carrying the light for a while. If nothing get's added here, either I find nothing else worth noting about the light, or I end up not using it often.
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