In action:
Side:
Front:
And an focus stacked image using the flash:
http://img.photobucket.com/albums/v649/ ... 5047fs.jpg
I used a milling machine to make the aluminum piece to fit around the pop-up flash, but this could easily have been made of wood or plastic and glued up. The center hole of the wood piece that fits on the lens was turned on a wood lathe then one side was sliced open with a band saw. The thumbscrew creates just enough pressure to keep the whole thing in place.
There are a little over 100 1mm fibers with 80% on one side. The fibers aren't long enough to rotate all around the lens, but it can be adjusted from about 6 oclock to 10 oclock (looking at the front). There was a lot of tension in the fibers when I first put it together, so I used a hair dryer to release the tension. The fibers are held in the aluminum with epoxy. Don't use super glue, it will turn the fibers brittle.
It cost an afternoon and approximately $20 to build.
Sources: http://www.fiberopticproducts.com/Unjacketed.htm
