lol! When I saw the title of this thread, I actually thought to myself, "Hey, there's athread I might actually be helpful on!"


As far as I know, yes, if the Cactus V4 is rated to 300V, and the flash triggers at 230V, you should be fine. I know I was hesitantto connect my Cybersyncs to an older Vivitar 285 (non-HV) flash as they have a wide range of sync voltages up to and above the Cybersync's 300V max. I tested it with a voltage meter before connecting it to the Cybersync receiver just to make sure.


Keep in mind I've never owned a set of V4s. Some people have gotten excellent V4 units; some have not. I would read up on the Cactus V4 thread on the strobist flickr forum before I pulled the trigger. You might also consider the CTR-301p units that you can buy on ebay. They're very similar to the Cactus V4s except they have a built-in optical slave sensor (which can be handy). They can even be modded fairly easily for somewhat better performance. However, I've never come across the max-sync voltage of the CTR-301ps. I think they'd be fine, but then again, it might not be worth the gamble for you to find out. ;-)