Awesome Photographer's Invention: Part 2. MACRO TTL 100% light-control device. DIY $4 !!

Awesome Photographer's Invention: Part 2. MACRO TTL 100% light-control device. DIY $4 !!

you can get the filament here:
http://www.ebay.com/itm/181892231212?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT