StSomewhere
Contributor
Actually that's a great question.nagonoj:What are the specification of DIR light?
WRT openwater (non-overhead) dives, what are the lighting requirements? Does it vary from bluewater to low vis to night diving? When is a 10 watt HID no longer acceptable?
The type of primary light an individual should consider is certainly going to vary depending on the dive chosen. For more technical dives most divers tend to use a separate battery canister and light head.