I wanted to experiment with some longer shutter settings like they use at fonarik.com but my camera does not do too well at ISO 800.
So I used 13" shutter speed and f14 (instead of f16) to compensate for the ISO400 that I used. Light and camera were sitting on the back of my red Mustang, so you don't get a full 360 degree beamshot as the spoiler and body sort of cut off the lower spill.
This is the TK41 on Lo, it is almost a control shot
Medium brings out real light
Now the TK41 on High
And on Turbo
This is a shot angled the opposite direction down my driveway. That bright white thing to the left of the tree is my mailbox post, almost 250 feet away. Turbo mode
I didn't found lux@1m for tk-41 anywhere, but found a test for tk-60. It has the same head (or it looks like the tk-41) and the light output values are very close with tk-41. So just for info, TK60, Turbo - 45,936 Lux @ 1 Meter