DIY LED focus light schematics

Found this post on DPR that maybe of interest to those wanting to DIY a focus light. Although post is about topside unit, it should be able to adapt to an underwater version somehow.

http://forums.dpreview.com/forums/read.asp...essage=35983456

Just what I need, another project

Bo

Would be nice to find one that senses when the flash fires and turns off like the fantasea focus lights.

Would be nice to find one that senses when the flash fires and turns off like the fantasea focus lights.

Hi Bill,

The OP claims the following on his design:

"....It is supposed to be used in dark environments to focus, and then it turns off automatically for the shutter and flash actuation. It also has a mode for continuous light, which is less impressive but handy for video or a poor man's flash. It runs on two 3V watch batteries and makes it 1000% easier to get an AF lock indoors in dim lighting. At the same time, it doesn't effect the image because it turns off automatically while the exposure is happening. I use it on my E-PL1, but it should work on ANY camera that triggers its flash shoe before an exposure...."

I hope you can find a way to use it underwater.

Cheers,

Bo

Hey Bo

Thanks But the link doesn't work

Bill