ringflash for nex (re-loaded)

There are various ring lights on the market for the NEX system but I'm not avare of any real ringflash. Few months back I created with the help of optical fibers a ringflash adapter. I gave a detailed " how to make it" description on my blog:
http://fiberstrobe.blogspot.de/2011/05/how-to-build-ring-flash-adapter.html

However, the small flash arrived with my nex was just not powerful enough to provide enough light.

Last week I received my HVL-F20S, which proved to be a perfect "engine" for this adaptor. I had to modify a bit the end fitting:

One modification was to add few fibers to direct the focus assist light to the ring for easier focusing also in the dark. You can see a branch of fibers just below the sony sign.The new flash pumps enough juice through the fibers and at base iso 200 I can use even f25 (but I don't want due to diffraction problems).

It works well:

More details you can find in my blog:
http://fiberstrobe.blogspot.de/
Cheers

Marcell