"Intelligent Illumination — Look at a cliff face above a hiking trail. Your headlamp illuminates the rock with a 300+ lumen beam. Now, glance at your map; notice as the headlamp beam instantly tones down to adjust for a close view. That is the reality of the NAO from Petzl, a self-adjusting light that uses optical sensors and a tiny computer processor built-in to assess what you’re looking at, how far away it is, and then to change its output accordingly from 8 lumens to 355 lumens in a literal blink.





NAO mounted on a helmet and ready to shine its “smart” beam
We tested the NAO headlamp, which will cost a cool $175 when it comes to market later this year, in the dark woods on an XC ski outing one night after the trade show. Short story: It works. The “intelligent” beam saves on battery life by only using the needed light for any distance view, plus you won’t blast your eyes with 300-lumen bounce back if you glace from that proverbial cliff face above to a glossy map held in hand."

[sorry, the pictures didn't copy over]