Olight Arkfeld Pro Review
Olight Arkfeld Pro⌗
- Specifications
- Introduction
- Torch in use
- Build quality
- LED, bezel, lens and reflector
- Size and comparison
- User interface
- Batteries and charging
- Performance
- Beamshots
- Conclusion
- Price
- Product page
Specifications⌗
| Brand/model | Olight Arkfeld Pro |
|---|---|
| LED | Cool White 5700-6700K 70 CRI, green laser, 365nm UV emitter |
| Maximum lumens | 1,300 lm |
| Maximum beam intensity | 2,608 cd |
| Maximum throw | 102 m |
| Battery | Built-in 1500mAh 3.7V LiPo |
| Onboard charging | Yes (magnetic charging) |
| Material | Aluminium |
| Modes | 5 |
| Blinkies | Strobe |
| Reflector | TIR (White Light), OP (UV Light) |
| Waterproof | IPX7 |
| Review date | September 2024 |
Introduction⌗
The Olight Arkfeld Pro is a flat-style EDC torch with a white emitter, green laser pointer and a 365nm UV light.
It has a magnetic charging port with a built-in 1500mAh 3.7V LiPo battery.
There is a button and a selector ring to switch between the white emitter, green laser and the UV light. The white light and green laser pointer can be used at the same time.
My brother asked me to review his Arkfeld Pro to see how it performs. I have not been paid for this review nor have I held back my opinions of this torch.
Packaging⌗
The Arkfeld Pro comes in white box with an image of the torch on the front and specifications on the back. The image feels raised and glossy.
The following was included in the box:
- Olight Arkfeld Pro.
- Olight MCC-1A Magnetic Charging Cable.
- User manual.
Torch in use⌗
The Olight Arfkeld Pro feels comfortable in my hand.
This torch is at the top of my list for lights to take while inspecting properties. The floody white light and the UV light come in handy.
The deep carry pocket clip makes it nice to EDC.
The torch can tailstand. And the magnetic tail allows it to be mounted like a work light.
Build quality⌗
The quality of the Olight Arkfeld Pro seems miles ahead of the competition.
I really like the professional look and feel of the button and the selector.
This particular Arkfeld Pro is made of aluminium and it has a satin orange anodised finish. There are no sharp edges.
There is a bit of grip on the side.
The selector clicks into place and the metal button feels nice to press.
If you look closely, you might see a dent on the back near the head. This was caused by dropping it on concrete. I took photos after my brother had already been using the Arkfeld Pro for a few months.
LED, bezel, lens and reflector⌗
This Olight Arkfeld Pro has a cool white (5700-6700K) 70 CRI emitter behind a TIR optic, a 510-530nm 0.39mW (Class 1) green laser pointer and a 365nm UV emitter with an orange-peel reflector.
The white emitter looks like an Osram P9 emitter. It is also available with a neutral white (4000-5000K) 70 CRI emitter.
CCT, CRI, and duv⌗
I have taken Correlated Colour Temperature (CCT) and Colour Rendering Index (CRI, RA of R1-R8) measurements with the torch positioned one metre away from an Opple Light Master Pro III (G3) for each mode except Moonlight.
The CCT is around 6200K, the CRI is around 70, and the Delta u, v is positive (green).
The beam produced has a wide spot. It is slightly floody.
| Mode | CCT (K) | CRI (Ra) | x | y | Duv |
|---|---|---|---|---|---|
| Low | 6068 | 69.7 | 0.3199 | 0.3419 | 0.0062 |
| Medium | 6165 | 70.0 | 0.3181 | 0.3402 | 0.0062 |
| High | 6250 | 70.5 | 0.3166 | 0.3376 | 0.0056 |
| Turbo | 6404 | 71.3 | 0.3141 | 0.3330 | 0.0045 |
Calculate Duv from CIE 1931 xy coordinates
Dimensions and size comparison⌗
Dimensions⌗
I took the following measurements using a digital caliper.
| Measurement | Unit (mm) |
|---|---|
| Length | 120.21 |
| Width | 27.59 |
| Height | 23.02 |
Weight⌗
I took the following measurements using a digital scale.
| Weight | Unit (g) |
|---|---|
| Olight Arkfeld Pro | 111.30 |
Size comparison with its competition⌗
From left to right: Wurkkos HD01, Olight Arkfeld Pro
User interface⌗
The Olight Arkfeld Pro is controlled with a button and a selector.
The selector can be rotated to change between:
- White Light Mode
- Laser Mode
- UV Mode
There are three levels in the main group for White Light Mode:
- Low
- Medium
- High
There are shortcuts to Moonlight, Turbo and Strobe.
There is one blinky mode: Strobe.
White Light Mode⌗
| State | Action | Result |
|---|---|---|
| Any | Press and hold the button for 1 to 2 seconds | Moonlight |
| Off | Click the button | On (mode memory) |
| On | Press and hold the button | Cycle (Low, Medium, High) |
| On | Click the button | Off |
| Any | Double click the button | Strobe |
| Any | Triple click the button | Turbo |
| Off | Press and hold the button for > 2 seconds | Lockout |
| Lockout | Press and hold the button for > 1 second | Unlock |
Laser Mode⌗
| White Light | Laser | Action | Result |
|---|---|---|---|
| Off | Off | Click the button | Laser On |
| Off | On | Double click the button | White Light On (High) |
| On | On | Press and hold the button | Cycle White Light (Low, Medium, High) |
| On | On | Double click the button | White Light Off |
| Any | On | Click the button | Off |
UV Mode⌗
| State | Action | Result |
|---|---|---|
| Off | Click the button | UV Light On |
| On | Click the button | Off |
Swap Turbo and Strobe shortcuts⌗
By default, Turbo is accessed with 3 clicks and Strobe is accessed with 2 clicks.
You can swap them around so that Turbo is accessed with 2 clicks and Strobe is accessed with 3 clicks.
The product pages mentions:
Setting 1 (Factory Mode): Double press for Strobe, triple press for Turbo.
Setting 2: Double press for Turbo, triple press for Strobe.
How to Change: In lockout mode, quickly press the switch ten or more times and hold it on the last press until the white light flashes twice.
Mode memory⌗
Mode memory includes Moonlight, Low, Medium and High. Turbo drops to High.
Timer⌗
A 3 minute or 9 minute timer can be configured to turn the torch off.
When the torch is on, double press and hold.
One blink indicates that a 3 minute timer has been set.
Two blinks indicates that a 9 minute timer has been set.
Strobe⌗
Strobe has a constant frequency.
I measured Strobe with a Zoyi ZT-703S oscilloscope using High Speed mode.
Battery level indicator⌗
There is a battery level indicator below the selector. The indicator will appear when the torch is turned on.
| Colour | Battery level |
|---|---|
| Four green indicators | > 75% |
| Three green indicators | 50 - 75% |
| Two green indicators | 25 - 50% |
| One green indicator | 10 - 25% |
| One red indicator | < 10% |
Low voltage protection⌗
The light turns off when the voltage gets low. I can turn the light back on and the battery level indicator will display one red indicator (< 10%).
Pulse Width Modulation⌗
I did not notice any visible PWM (flickering).
I measured the PWM of the light with a Zoyi ZT-703S oscilloscope.
Moonlight, Low, Medium, High, Turbo
What I like about the UI⌗
- I like how the selector makes it easy to change between the white light, green laser and the UV light.
- Direct access to Moonlight from off.
- Direct access to Turbo from off.
- Direct access to Strobe from off.
- The shortcuts for Turbo and Strobe can be swapped.
What could be improved⌗
- I personally would prefer it if the shortcut for lockout mode is four clicks instead of pressing and holding from off for 2 seconds.
Batteries and charging⌗
Battery⌗
The Olight Arkfeld Pro has a built-in 1500mAh 3.7V LiPo battery.
Charging⌗
The magnetic charging cable has an input of 5V 1A and an output of 4.2V 1A.
The indicator light in the magnetic charging cable changes from red to green when charging is complete.
Power supply compatibility⌗
I tried the following power supplies with the USB-A magnetic charging cable:
| Power supply | USB Type | Protocol | Does it charge? |
|---|---|---|---|
| PinePower Desktop | USB-A | QC | Yes |
| PinePower Desktop | USB-A | Yes |
Performance⌗
Specifications from the manual:
White Light⌗
| Lumen | Runtime | Throw | Candela | |
|---|---|---|---|---|
| Turbo | 1,300 + 420lm | 4 + 126min | 102m | 2,608cd |
| High | 420 + 100lm | 135 + 12min | 62m | 971cd |
| Medium | 100lm | 9h45min | 29m | 210cd |
| Low | 15lm | 55h | 11m | 31cd |
| Moonlight | 1lm | 11days | 2m | 1cd |
UV Light⌗
Optical Power: 900+560mW
Wavelength: 365nm
Runtime: 5+310min
The user manual has a bit of a runtime graph with the estimated output over time.
Lumen measurements⌗
| Mode | Specs | Lumens @turn on | Lumens @30 sec | Lumens @10 min |
|---|---|---|---|---|
| Moonlight | 1 | |||
| Low | 15 | 14 | 12 | 12 |
| Medium | 100 | 91 | 89 | 89 |
| High | 420 + 100 | 354 | 351 | 346 |
| Turbo | 1,300 + 420 | 1,145 | 1,105 | 343 |
Moonlight was too low for my DIY lumen tube to detect.
It looks like my DIY lumen tube is reading 10% below the expected lumen output. The calibration could be slightly off with my DIY lumen tube.
1lumen.com and zeroair measured closer to Olight’s specs.
I tried measuring Turbo a few times but I got the same results (<1,200 lumens).
It is worth noting that the Arkfeld Pro that I tested is not brand new. It has been used for a few months and knocked around.
Runtime graphs⌗
I used my own DIY lumen tube with a TSL2591 sensor and forked bmengineer’s project RuTiTe to record runtimes.
Note: Lumen measurements may be off by 10% with my DIY lumen tube.
The room temperature was approximately 13 C.
Runtime⌗
Here is a summary of the runtime results:
| Mode | User manual | Runtime | Turn off |
|---|---|---|---|
| Turbo | 4 + 126min | 2h 4min 20s | 2h 16min 12s |
| High | 135 + 12min | 2h 26min 35s | 2h 26min 34s |
| Medium | 9h45min | 9h 53min 35s | 9h 53min 35s |
| Low | 55h | 10min+ | 10min+ |
| Moonlight | 11days | 10min+ | 10min+ |
“Runtime” is the time until the output reduces to 10% of the output at 30 seconds (as per the ANSI/PLATO FL1 2019 Standard).
“Turn off” is the time until my DIY lumen tube no longer detects more than 1 lumen.
“+” indicates that the light remained on after recording had stopped.
The runtime is slightly better than expected.
I love the stable output!
Throw⌗
I took lux measurements with a UNI-T UT383BT at 30 seconds. Each mode was measured at one metre.
| Mode | Specs (cd) | Specs (m) | Candela measured (cd) | Distance (m) |
|---|---|---|---|---|
| Moonlight | 1 | 2 | 0 | 0 |
| Low | 31 | 11 | 31 | 11 |
| Medium | 210 | 29 | 241 | 31 |
| High | 971 | 62 | 966 | 62 |
| Turbo | 2,608 | 102 | 3,123 | 111 |
Beamshots⌗
I went to a local park and aimed the Olight Arkfeld Pro at a tree 70 metres away while using Turbo.
Beamshots were taken using a Sony RX100M2 using 3.2", f3.2, ISO 100, 5000K WB.
Olight Arkfeld Pro (Turbo)⌗
Wurkkos HD01 Spot (Turbo)⌗
Olight Arkfeld Pro (UV)⌗
The UV light looks powerful!
Conclusion⌗
The Olight Arkfeld Pro is my top pick for a flat-style EDC torch to take along to work sites for inspections.
The button and selector make this torch simple to use.
The quality of the Arkfeld Pro feels like it is miles ahead of the competition.
The floody beam is nice. It would be even better if the Arkfeld Pro could somehow have spotlight emitter too. Perhaps three emitters? Floodlight, spotlight and UV light.
It would be nice if the UV light had a ZWB2 filter to increase the contrast so that colours appear more vibrant.
A user replaceable battery would come in handy if the battery degrades over time.
The runtimes are better than expected.
Overall, the Olight Arkfeld Pro performs pretty well! I am sure that my brother is enjoying it as his EDC torch now.
Let me know if you would like me to review more EDC torches by Olight. :-)
Pros:⌗
- Excellent build quality.
- Excellent runtimes.
- Good beam distance.
- Floody beam.
Cons:⌗
- Low CRI (70) for an EDC torch.
- No ZWB2 filter for the UV light.
- Built-in battery.
Price⌗
The Olight Arkfeld Pro is AU$154.95 from olightstore.com.au
There is a newly released upgraded version: Olight Arkfeld Ultra.
I recommend checking out the Acebeam M2. While it is not a flat-style EDC torch, it has a floodlight and a spotlight with a simple user interface. The toggle switch to go between the spotlight and floodlight is a joy to use. And the spotlight is great for inspecting a roof from the ground level.
Product page⌗
Here is a 10% promo code that may be used when there isn’t a sale: TMM10
olightstore.com.au affiliate link
I may earn a commission if you use an affiliate link or a promo code. This will help fund future torch reviews and tutorials.