After buying a Yongnuo flash and finding its wireless capabilities “hit and miss”, Marcell of fiberstrobe decided to try out something he saw on a forum: using a fiber optic cable as a sync cord. The Yongnuo YN460-II can function as an optical slave, so the basic idea is to channel light from your camera’s flash into the light sensor of the strobe. To solve the problem of light leakage, Marcell also created an accessory using LEGO bricks, cardboard, and duct tape to fox the fiber to the sensor and protect it from direct sunlight.

DIY fiber sync cord (via DIYP)