For 10m throw measurements, here's the deal. It's been generally proven any throw measurements under 10m is biased to being low. I've proven this to myself recently, but rdrfronty and manxbuggy1 have done the most thorough research on this I've seen anywhere, and they have proven it. Their results showed 10-15 meters is pretty ideal. Anything over 15m doesn't make any difference - they went out to 100's of meters and saw consistent results with what they measured at 15.
If I had my preference I'd use 15m (my backyard is limited), but I believe they found not much difference between 10-15m. They, and others I recall, pretty much agree the minimum distance that should be used for reliable results is 10m, and again, 15m is more ideal. I don't recall where this was all stated/tested but you might find it in these threads below - I keep these bookmarked because they are still some of the best ever posted on BLF for throw measurements and beamshots to this day:
https://budgetlightforum.com/t/-/18214
https://budgetlightforum.com/t/-/18774
https://budgetlightforum.com/t/-/22397
https://budgetlightforum.com/t/-/25465
Best definitions/equations for throw, Dr. Jones: https://budgetlightforum.com/t/-/3879
- For my BOSS1, the mod is direct wired - no driver electronics, no FET.
- yes agree: the handle is kludgy but actually works quite well. This light really needs a handle and I found it be sturdy, comfortable ,and totally ugly. Another words, it's not as bad as it looks and it's really, really needed - my hands just ain't that big to comfortably grip this monster. It's the only handled light I kept the handle on.