Hello guys

I'm an refuge from the P3U list. But found you all back here. which is good!

So I build this 10 x 4 W led light for filming in caves:
http://users.skynet.be/sky33676/IMG_4117.jpg

If you want to know how it worked, here is a link to a 4 min. youtube video:

Visit to the Trou d'Haquin	Small | Large

Planning now on an upgrade of this lamp. I should get a much better output from
this light with a switching current supply with a variable offset so it can be syncronised
with the camera.

Soon more

Guy the caveman

Hello Chris

I use a 12 V 17 Ah lead battery. The current is 5 A. Which is still acceptable.
In the halogen era this was equivalent to a 60 W bulb. In a cave you needed 100 W halogen
power to get some decent results. The nice things from this led light is the very even lighting
I get. With a halogen you got one light blob and you had to aim for this light circle.
With this led light you get a nice 140 degree even light. So it doesn't matter if you are some degrees off.

Guy

Hi Guy

Very Neat too!!! On eBay here we are also now getting 10W modules from Taiwan for as little as $6 each...gosh a few years ago a 1W Luxeon LED was around $30!!! We are getting to the point now where LED video lighting is becoming a cost effective issue.

Thanks again for the info. With that size battery you couldn't use it on-camera but what an awesome portable video light!! The images in the video were crisp and I bet it was pretty dark down there!!!

Chris