Today we have 3 LEPs on the table:
- Lumintop Thor II,
- Astrolux WP4,
- Astrolux WP3,
- and additionally, the Convoy L21B as a base, because it’s a good popular thrower that many people already own.
Lumintop Thor II and Astrolux WP4 can be used with both a 18350 and 18650 tube.
I had to purchase the Thor II 18650 tube separately.
| Model | Brightness | Candela | Throw | Estimated range* | cd/lm** |
|---|---|---|---|---|---|
| Convoy L21B | 1880lm | 369056cd | 1215m | 450m-600m | 196 |
| Astrolux WP4 | 237lm | 332929cd | 1154m | 385m-577m | 1405 |
| Lumintop Thor II | 238lm | 727609cd | 1706m | 569m-853m | 3057 |
| Astrolux WP3 | 505lm | 2762244cd | 3324m | 1108m-1662m | 5469 |
* – Explanation
The throw/range of a flashlight is defined by the ANSI FL1 standard. It says that a flashlight’s range is how far it will light up a surface to 0.25lux, which is about as bright as full moon.
This most of the time isn’t bright enough to actually see what you’re shining on, so I added in an estiamte to what you can expect the maximum range of the flashlight to be.
** – Candela/lumen ratio explanation
A good way to determine the beam profile of a flashlight is to divide its candela (cd) by the lumens (lm) it produces. In return, we will get the cd/lm ratio. Here’s an approximate scale of what those values mean:
- 0.1 cd/lm: light bulb
- 1-3: flooder
- 5-15: balanced EDC-style beam
- 30: compact thrower
- 100: dedicated thrower
- 500+: extreme thrower
- 10000: laser
Beamshots
50m:
50m (zoom):
~80m:
170m:
170m (zoom):
Interactive slideshow:
350m:
500m:
700m:
