The SectionHiker have published a review of the Black Diamond Spot LED Headlamp. 'The Black Diamond Spot is a Super Bright LED. To put this in perspective, the Spot casts a beam 70 feet while a Petzl e+Lite casts one 19 feet (measurements provided by REI.) Similarly, the Lux of the Spot at 2 meters is 306 vs. 23 for the e+Lite. Lux is a measure of the quantity of light the falls on an illuminated surface and is measured using a light meter. On flat surfaces, like a trail or map, the light of the full moon shines at an intensity of 0.25 lux, so 1 lux at 2 meters is 4 times brighter than the full moon.
