Got out in the garden this evening to get some shots done. Camera set on manual ISO100 4secs, f3.5:
Here's the helmet mount (cat not included). I took the velcro off & have just used some removable zip-ties. The mount is foam backed so easy to compress & get a nice, secure fit:


Here's the Spokeshirt light at full whack:

On low power;

And here's my Lumi LED conversion (675mA driver) for comparison on high:

On low (200k resistor wired into BCT-Teapot driver):

