Hello everyone,
Sofirn kindly sent me a free sample of their brand new product TF84 in return for an honest and unbiased review. Thanks a lot for the nice opportunity.
Disclaimer: I did not receive any kind of compensation except for the light in return for this review.
What's special about Sofirn's TF84?
While many of Sofirn's flashlights are typical side switch lights, they also have some tacticool and even tactical lights in their portfolio, e.g. C8F, SP31 V2 and SP70. Now, TF84 ("T" probably stands for 'tactical' here) is meant to be a true tactical flashlight for a wide range of applications (hunting, security, military, law enforment etc.), offering a user interface and some accessories that can usually be found in other tactical flashlights of different brands. While Sofirn's SF47T is great for medium distances, their new TF84 model is the more appropriate tool for shorter distances and convenient carrying on one's tactical belt. Highlights of the TF84 model are its constant current buck driver, the choice of a high CRI emitter, its capability to use CR123A batteries, a modern USB-C port, a quite sturdy design, a reasonable output / power consumption ratio as well as a quite remarkable tint - more about this later on. Similar to SF47T this model also comes with two mode groups to support individual needs.
Some specifications:
- Dimensions: 143mm (length) x 35mm (head diameter)
- Weight: 120g w/o battery
- Emitter: Samsung LH351D 90CRI, 5000K CCT
- Max. output: 1,200 lumens (manufacturer's rating)
- Max. runtime: 336 hours (Moonlight mode)
- Peak distance: 200m (manufacturer's rating)
- Peak intensity: 9,908cd (manufacturer's rating)
- Driver: constant current buck driver
- USB specs: type C port, 5V 1A input
- Battery: 1x 18650 rechargeable lithium-ion battery or 2x CR123A lithium-ion battery
- Water resistance: IPX-8 up to 2m
- Impact resistance: 1m
- User Interface: tactical triple switch UI with stepped modes (Low, Medium, High and Turbo with hidden Moon mode as well as Strobe/SOS/Beacon) and two mode groups (outdoor, tactical)
- Mode Memory: Yes (standard modes only)
- Low voltage protection
- Reverse polarity protection
- Thermal regulation "ATR"
Where to buy? (non-affiliate-links):
There are different retail versions of TF84, from the bare flashlight up to a kit-3 version with remote switch, red diffuser and battery.
>>> Sofirnlight.com(link is external) <<<
>>> AliExpress(link is external) <<<
This model will certainly be also availabe on Amazon anytime soon.
Please note that Sofirn frequently promotes discounts and coupons on BLF, so I recommend checking for these before you hit the purchase button.
Unboxing
This model comes in Sofirn's typical neutral cardboard box design, being used for flashlights with a larger head diameter. There is not much to say here. The box serves its purpose to protect the content. Some customers may look for a more exciting "unboxing experience" but personally I prefer an environmentally-friendly box that is easy to open.
The kit-2 version contains the light, a 3000mAh battery, a USB cable (type A-C), a remote switch, two spare o-rings and the manual.
The shape of TF84 is quite similar to many other tactical dual-tail switch flashlights like Klarus XT12S, XT2CR Pro, FX10 or Fenix TK16. In fact, TF84 is a competitor to many of Klarus's, Jetbeam's and Fenix's tactical flashlights. There are very slightly protruding heat fins but this is not an issue at all since overheating will never occur with this light as you can read later on. The head features a crenelated stainless steel bezel to add more support when used to break windows or in case the light falls onto the ground. The protruding side switch features an indicator LED to show battery/charging status as well as to indicate the electronic lockout mode. I did not encounter any problems with this switch or its tactile handling. The clip is very sturdy and probably hard to remove. I discovered minor scratches on the clip's groove even though I did not try to move it. The tube knurling works well to add more grip in one's hand during operation.
I did not manage to unscrew the tube from the head. I guess Sofirn glued them together to provide better long-term reliability with its dual-tube design. I would have liked the chance to remove the tube entirely, though. The threads are non-anodized as you can see below. They were not lubricated either, so I recommend to do this once you get started with the flashlight. However, the tailcap went on and off very gently.
Below you can see a close-up of the positive terminal with the driver (left picture) and the negative terminal in the tailcap (right picture). The springs are quite flexible to support different lengths of 18650 and CR123A batteries.
I discovered some dust in the reflector but not as much as in my sample of SF47T. Still, I would appreciate it if Sofirn were to put more attention to dust-free assembly. TF84 features a dual-tube design, i.e. the inner tube works for electronic signaling to operate the paddle switch and the outer tube for current flow. Although the tube looks like it could fit 21700 batteries the inner diameter is too small.
Sofirn chose a smooth reflector in combination with Samsung's LH351D 5000K 90CRI. This is quite unique as many tactical flashlights only come with coldwhite and low CRI emitters. The beam profile works great for short to medium distances with a typical hotspot and lots of useful spill around it. The emitter is very well centered. I did not detect any major distortions of the beam due to the stainless steel bezel. The flashlight can do a tailstand but not very stable. Its tail switches work properly but the paddle switch is a bit too sensitive. It sometimes happened that I accidentally triggered strobe mode or changed the modes while having my thumb rested on the on/off switch.
Size comparison
from left to right: Sofirn C8F 21700, Sofirn TF84, Sofirn SP33 V3, Sofirn SP35, Sofirn SC31 Pro, Wurkkos FC11 (with 18350 tube)
User Interface
Like many other tactical models with dual tail switch layout, TF84 comes with a classic UI. You can select from two mode groups called "Outdoor" and "Tactical". Both mode groups have dedicated stepped modes in common. TF84 supports turning on and off both via side switch and tail switch.
Group 1 - Outdoor (default)
Light is... | Action for tail switch | Action for mode paddle switch | Action for side switch | Result |
---|---|---|---|---|
OFF | Tap and hold | Momentary mode | ||
Press | Turn on (Turbo) | |||
Hold | Momentary strobe mode | |||
Hold (2s) | Continuous strobe mode, another click for turbo mode | |||
Hold | Moonlight mode, another click for standard modes | |||
Click | Turn on (with mode memory, will be reset once tail switch is triggered) | |||
Doubleclick | Strobe, another click to cycle through strobe - SOS - beacon, another doubleclick to return to previous standard mode | |||
4 clicks | Turn on/off electronic lockout mode for side switch | |||
Hold (3s) | Hold (3s) | Change to Tactical group (light blinks one time) | ||
ON | Press | Turn off | ||
Click | Cycle through modes (turbo-low-medium-high) | |||
Hold (2s) | Continuous strobe mode | |||
Hold | Turn off (works only if tailswitch is not activated) | |||
Click | Cycle through modes (turbo-low-medium-high) | |||
Doubleclick | Strobe, another click to cycle through strobe - SOS - beacon, another doubleclick to return to previous standard mode |
Group 2 - Tactical
Light is... | Action for tail switch | Action for mode paddle switch | Action for side switch | Result |
---|---|---|---|---|
OFF | Tap and hold | Momentary mode | ||
Press | Turn on | |||
Hold | Momentary strobe mode | |||
Hold (2s) | Continuous strobe mode, another click for turbo mode | |||
Hold | Moonlight mode, another click for standard modes | |||
Click | Turn on (with mode memory, will be reset once tail switch is triggered) | |||
Doubleclick | Strobe, another click to cycle through strobe - SOS - beacon, another doubleclick to return to previous standard mode | |||
4 clicks | Turn on/off electronic lockout mode for side switch | |||
Hold (3s) | Hold (3s) | Change to Outdoor group (light blinks three times) | ||
ON | Press | Turn off | ||
Click | Cycle through modes (turbo-medium) | |||
Hold (2s) | Continuous strobe mode | |||
Hold | Turn off (works only if tailswitch is not activated) | |||
Click | Cycle through modes (turbo-medium) | |||
Doubleclick | Strobe, another click to cycle through strobe - SOS - beacon, another doubleclick to return to previous standard mode |
Runtime and thermal analysis
As mentioned before, TF84 uses a buckdriver with constant current regulation. This kind of driver is known to be very efficient and great for constant output. The flashlight maintains its full output for about 4 minutes before thermal regulation (ATR) is triggered at approx. 40°C surface temperature, followed by a very decent stepdown that levels its brightness to around 66% for a duration of a bit more than an hour. After that the driver fell out of regulation, probably when Vf on the LED and the battery's voltage under load matched. A buck-boost driver would have enabled a bit more continuous output. Unlike to Sofirn's SP35 with ATR the output here is completely flat without any significant fluctuations over the course of the graph. The temperature never exceeded 45°C, so this flashlight can be considered as a safe tool without burning one's hand. Being a bit nitpicky as usual I would have liked a slightly higher temperature threshold to offer a bit more regulated output. OTOH, you get a very useful runtime, especially if you need to rely on CR123A batteries.
Accessories
Sofirn sells their TF84 in different kit-versions. Kit-2 comes with a battery and a remote switch. Kit-3 also includes a red diffuser which could be used as a traffic wand. By the time my review sample was shipped the red diffuser was not yet available. Barry kindly provided some pictures to show you how it looks like. Since I do not have any rifle to mount TF84 to, I can only show you the remote switch loosely attached to the flashlight.
Beamshots
I was very positively surprised about the beam and tint quality. The SMO reflector offers a distinct hotspot for more range but also provides a good proportion of spill. Samsung's LH351D is not a good option for throwers but here it seems to be a well-balanced choice between peak intensity, output and tint quality. I did not see any greenish tint shift at all. On the contrary, I would say there is even a slight hue to rosy in comparison to the same emitter in Wurkkos's FC11.
All outdoor beamshots were made with following settings to represent a realistic impression of brightness by human eyes. The left picture is a "check shot" in darkness, the right one represents TF84 on turbo mode.
Camera: Panasonic Lumix FZ-62
Focal length: 25mm
ISO: 400
Aperture: f / 5.6
Shutter speed: 4s
The white house is about 120m away.
It's about 35m where the foodpath makes a left-turn.
It's about 15m until the foodpath makes a right-turn.
Side by side comparison between Wurkkos FC11 and Sofirn TF84
Conclusion & Verdict
Sofirn did a good job launching a new tactical flashlight with high CRI and a very pleasant neutralwhite tint as a unique selling proposition. The buck driver works great for those who prefer constant brightness as well as using CR123A batteries. TF84 is definitely not a typical EDC light but more aimed to hunters, LEOs or even military staff. There's some potential here that I could not test for reasons of legal restrictions.
Pro:
- good constant regulation
- remarkable neutral tint with slight rosy hue
- good overall beam profile for tactical purposes
- high CRI for optimum color rendition
- many (optional) accessories
- integrated charging via USB-C
- operational with both side switch and tail switch
Neutral:
- very moderate output of only 1200lm (probably a bit less than that)
- ATR is set to 45°C while 55°C is more common, offering a bit more output
- I am not a big fan of strobe modes - TF84's UI is full of ways to trigger strobe modes.
- I would prefer the clip not being mounted by factory
Con:
- paddle tail switch triggers too easily
- outdoor and tactical group only differ by brightness levels but not by a more flexible UI
- small amounts of dust/debris in the reflector