Best canister light for signalling in poor vis ?

[Wibble]

Backup lights…. Clipped to my harnesses for years on end waiting for the moment to shine. These need to be supremely reliable despite being ignored for long periods.

I’ve a couple of Ammonite Led1 and Led2 torches which always work after many hundreds of hours at all depths. Obviously rechargeable batteries are out of the question due to self discharge. Enough light is enough to continue the dive.

 

[crofrog]

What little I have seen of them is incredible, uncontrolled light. Great light quantity and quality, but they can't make a good beam pattern yet, no control.

But I hear they are working on a really powerful light, maybe too powerful

Sunbeam

The Lep lights I’ve played with are a good beam pattern if you want an extremely focused light with no spill.

 

[Gone for diving]

For instance the fact the halycon scouts are still rocking C batteries and ~200lm emitters is sort of crazy. Sure they're crazy reliable, but they could be so much more.

I can understand using C batteries...
Cheap, reliable, easy to get, low discharge..etc
But that's it,,,