My Sigma flash has a multi-flash, or stroboscopic, option in that I can figure it to pulse the flash a certain number of times at a certain frequency. This is particularly cool for doing effects such as tracking the motion of an object like this yo-yo I shot:
The problem I have is that I want to do the same thing off-camera, but even with the X-sync cable it's a no go. I even tried party strobe lights (as in dance lights), but no go unless I buy professional grade versions because the power is way too low (like a guide number of a half inch to be honest). So... The question is, any good alternatives that won't cost an arm and a leg?
