Hey, I managed to dive this weekend and tried a couple of my torches out.
Bottom line: unsurprisingly - although disappointingly - torches don't fix bad viz.
Limited review under unusually bad conditions. Conditions: very poor viz <1m
water like a bad pint of 6X (very cloudy).
First up:
UK mini Q40 -- mask mounted torch. I liked this a lot & will probably use it a great deal in the future.
Pros:
+ you forget you are wearing, very easy to carry.
+ very good close up -- e.g. scouring the bottoms for scallops & other shell fish.
+ reasonable price
+ readily available (UK/USA/internet)
Cons:
- it is hard to tell whether it is on a lot of the time (could waste batteries) - esp. when the sun comes out.
- no significant beam
- no increase in viz distance
Omer Moonlight Elite -I liked this too. I hung this from my float & mainly just used it from the float (I had my hands full -- long story...but I did not have a free hand to hold this)
Pros:
+ powerful beam -- visible in the cloudy murk -- quality, smooth metal reflector
+ auto-off switch avoids wasting batteries
+ could just about scour the bottom with the tightly focused bean from about 4 or 5 feet away.
+ quality, heavy steel head with glass lens
+ decent plastic lanyard with slide ring
Cons:
- no increase in viz distance (probably nothing would -- like driving in snow...you just see the snow flakes better!)
- body appears to be plastic -- seems like it might be a brittle type too --- don't drop it.
- expensive new
Result: scallops
but no sign of fish
.