LED Dive Lights
Canister vs Handheld Lights
Heraclitus, a Greek philosopher (about 500 BC), wrote "Nothing endures but change."
A new class of lower cost technical dive light has begun to supplant the corded light head and battery canister form factor of the past. LED technology has advanced to the point where inexpensive backup lights are as bright or brighter than previous generation primary lights, plus LED is dramatically more reliable and much lower power consumption. With advancement in rechargeable battery technologies even the form factor of the large canister is being questioned. Today this means the main operational difference between a backup and primary light is the burn time, with many divers forgoing the traditional canister primary and handheld backup in favor of multiple handheld primaries. However, for extreme environments that demand the maximum burn time with maximum lumen output the newest generation canister lights seem to still be the preferred choice of exploration divers.