On this page five commercially offered headlamps (LedLampe IV, Scurion P7 und 1300, Petzl DUO LED 14 and Petzl ULTRA) are compared to another five headlamps not (or just not) available on the market.
These photos were shot at Hades in Hirlatzhöhle (Austria).
The same headlamps were compared at Sandtunnel too
First close or hide any sidebar to achieve maximum horizontal window size,
press F11 and than chose two lights or settings to compare.