Smarten Up Your Dumb Optical Slave By Hooking it Up With Arduino

Smarten Up Your Dumb Optical Slave By Hooking it Up With ArduinoOptical Slaves are the simplest (and cheapest for the most part) method for using off camera flashes.

The principle is simple, when the optical slave sees another flash fire, it fires too. Kinda like yawning. Once one of goes, it is catchy.

Of course optical slaves have their limitations, one of which is that they are too dump to understand the difference between a flash and a pre-flash. There are a few more limitations to optical dumb slaves, but this post is about overcoming the pre-flash issue with a cool gizmo called Arduino. [Read more...]