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I've used regular scuba dive lights and they don't put out much light. I
can see where an LED set-up would give diffused light without much distance
capability. I wonder how a high power focused light shone from behind a viewport
would work. I have a hand held spot light that's 12 volt and has 1 million
candle power. It gets a little hot close to the lens but at 6 inches is only
just warm. It can be focused into a tight beam and will run for several hours on
it's batteries. It takes a lot of Duracells to load it up though. I plan on
using it as a back-up inside the sub so will report on it when I take the sub
out. Frank D. |