I’ve been curious too, so I finally measured. My setup measures at 5m then calculates back to 1m. I have the light and meter both raised, above carpet, and obstacles on both sides of the path, to prevent spill from bouncing into the meter… so it only picks up the hotspot. This may result in lower throw values than what some people measure, but it better represents how the light should perform outdoors. (in contrast, one of the worst ways to measure throw is by aiming down a long white hallway with a hard floor, since much of the spill will bounce off the walls/floor and hit the meter)
I got 28.6 kcd at start on my D4vn with a 30Q fresh off the charger. Or 25.4 kcd at start with a 25R at 3.9V. These numbers can be compared to the throw measurements in this thread’s OP.
Since these are at start on maximum power on a very overpowered light, the throw drops very quickly due to heat and voltage sag. During regular use, you can expect significantly less throw (unless you only use the light ~3 seconds at a time, on max turbo). However, the D1 and D1S should be far less prone to heat and voltage sag, so their throw during normal use should be much closer to the throw at start.
For something somewhat similar to a D1 or D1s, I measured my BLF X6v2. I got 55 kcd at start with 30Q after using the cell for a D4 test, or 47.6 kcd with a 25R at 3.9V (also after running a D4 test).
I also took some pics of the beam compared to the 219c model. The camera used daylight white balance, and the pictures show pretty much how the beam looks to me in real life. Pictures haven’t been edited at all except to resize them. Both lights were running at the 100%–7135 level, ~140 lm.
Left: D4vn. Right: D4-219c.
