I dont know guys,
dont flame me i make my own lights, just because i like to mess with submerged electrical things
.
During when weather was up last year i made about 10 lights, tank tumbler, O2 meter, Pressure tester and changed latex seals on both of my suits and overhauled all of my regs.
if i may summarize, above thread.
0. if you have friend with lots of lights and tanks thats a way to go.
1. If you going to make 1 light to save money, forget it.
2. If you make lights for fun, research this board or candlepower forum you be surprised.
I make different lights for different purpose, flood for video, spot for diving but i made a bunch of them by now, and i already spent 1000$ to learn what not to do
here small production site
Technical Lighting Specialties | 350xFire Hector is a very nice guy to deal with if you want custom light, he can build one with 2300 lumen led.
np251 IMHO
1.you can not use lens to focus multi die LED, it is not efficient, you need deep reflector , the best i found if this
DealExtreme: $22.28 SSC P7-C 2800mA LED Module with Copper Base (3.6V~8.4V) with proper driver and D bin it will be very focused and great for Monterey waters,
2. you need to drive it at 2.8amp, using LI-IO batteries (2 x 4 of 18650 will do ) at 2.1A you just lost 20% of its output.
3. about canisters just use OMS canisters they only 40$ each